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Finding the Fourth Proportional to 7,209.27, 9,948.76 and 3,897.27

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Solution

The fourth proportional to 7,209.27, 9,948.76 and 3,897.27 is: 5,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.27 : 9,948.76 = 3,897.27 : x
  2. Step 2: Convert to fraction form
    7,209.27/9,948.76 = 3,897.27/x
  3. Step 3: Cross multiply
    7,209.27x = 9,948.76 × 3,897.27
  4. Step 4: Simplify right side
    7,209.27x = 38,772,934.66
  5. Step 5: Solve for x
    x = 38,772,934.66/7,209.27
  6. Step 6: Final answer
    x = 5,378.21

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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.