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Finding the Fourth Proportional to 9,078.76, 12,525.06 and 5,720.68

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Solution

The fourth proportional to 9,078.76, 12,525.06 and 5,720.68 is: 7,892.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.76 : 12,525.06 = 5,720.68 : x
  2. Step 2: Convert to fraction form
    9,078.76/12,525.06 = 5,720.68/x
  3. Step 3: Cross multiply
    9,078.76x = 12,525.06 × 5,720.68
  4. Step 4: Simplify right side
    9,078.76x = 71,651,860.24
  5. Step 5: Solve for x
    x = 71,651,860.24/9,078.76
  6. Step 6: Final answer
    x = 7,892.25

Related Problems

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Half scale
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Double scale
Find fourth proportional to 9,079.76, 12,526.44 and 5,721.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.