Home / 9,078.21-12,525.71-5,299.20

Finding the Fourth Proportional to 9,078.21, 12,525.71 and 5,299.20

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Solution

The fourth proportional to 9,078.21, 12,525.71 and 5,299.20 is: 7,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.21 : 12,525.71 = 5,299.20 : x
  2. Step 2: Convert to fraction form
    9,078.21/12,525.71 = 5,299.20/x
  3. Step 3: Cross multiply
    9,078.21x = 12,525.71 × 5,299.20
  4. Step 4: Simplify right side
    9,078.21x = 66,376,215.94
  5. Step 5: Solve for x
    x = 66,376,215.94/9,078.21
  6. Step 6: Final answer
    x = 7,311.60

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Double scale
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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.