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Finding the Fourth Proportional to 5,397.76, 7,451.76 and 4,139.02

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Solution

The fourth proportional to 5,397.76, 7,451.76 and 4,139.02 is: 5,714.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,397.76 : 7,451.76 = 4,139.02 : x
  2. Step 2: Convert to fraction form
    5,397.76/7,451.76 = 4,139.02/x
  3. Step 3: Cross multiply
    5,397.76x = 7,451.76 × 4,139.02
  4. Step 4: Simplify right side
    5,397.76x = 30,842,983.68
  5. Step 5: Solve for x
    x = 30,842,983.68/5,397.76
  6. Step 6: Final answer
    x = 5,714.03

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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.