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Finding the Fourth Proportional to 6,557.52, 9,047.88 and 3,906

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Solution

The fourth proportional to 6,557.52, 9,047.88 and 3,906 is: 5,389.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,557.52 : 9,047.88 = 3,906 : x
  2. Step 2: Convert to fraction form
    6,557.52/9,047.88 = 3,906/x
  3. Step 3: Cross multiply
    6,557.52x = 9,047.88 × 3,906
  4. Step 4: Simplify right side
    6,557.52x = 35,341,019.28
  5. Step 5: Solve for x
    x = 35,341,019.28/6,557.52
  6. Step 6: Final answer
    x = 5,389.39

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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.