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Finding the Fourth Proportional to 7,127.76, 9,839.58 and 5,239.35

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Solution

The fourth proportional to 7,127.76, 9,839.58 and 5,239.35 is: 7,232.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.76 : 9,839.58 = 5,239.35 : x
  2. Step 2: Convert to fraction form
    7,127.76/9,839.58 = 5,239.35/x
  3. Step 3: Cross multiply
    7,127.76x = 9,839.58 × 5,239.35
  4. Step 4: Simplify right side
    7,127.76x = 51,553,003.47
  5. Step 5: Solve for x
    x = 51,553,003.47/7,127.76
  6. Step 6: Final answer
    x = 7,232.71

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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.