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Finding the Fourth Proportional to 7,055.91, 9,737.18 and 3,912.11

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Solution

The fourth proportional to 7,055.91, 9,737.18 and 3,912.11 is: 5,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,055.91 : 9,737.18 = 3,912.11 : x
  2. Step 2: Convert to fraction form
    7,055.91/9,737.18 = 3,912.11/x
  3. Step 3: Cross multiply
    7,055.91x = 9,737.18 × 3,912.11
  4. Step 4: Simplify right side
    7,055.91x = 38,092,851.00
  5. Step 5: Solve for x
    x = 38,092,851.00/7,055.91
  6. Step 6: Final answer
    x = 5,398.72

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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.