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Finding the Fourth Proportional to 9,079.76, 12,526.44 and 5,721.68

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Solution

The fourth proportional to 9,079.76, 12,526.44 and 5,721.68 is: 7,893.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,079.76 : 12,526.44 = 5,721.68 : x
  2. Step 2: Convert to fraction form
    9,079.76/12,526.44 = 5,721.68/x
  3. Step 3: Cross multiply
    9,079.76x = 12,526.44 × 5,721.68
  4. Step 4: Simplify right side
    9,079.76x = 71,672,281.22
  5. Step 5: Solve for x
    x = 71,672,281.22/9,079.76
  6. Step 6: Final answer
    x = 7,893.63

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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.