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Finding the Fourth Proportional to 5,292, 7,940.16 and 3,903.12

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Solution

The fourth proportional to 5,292, 7,940.16 and 3,903.12 is: 5,856.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292 : 7,940.16 = 3,903.12 : x
  2. Step 2: Convert to fraction form
    5,292/7,940.16 = 3,903.12/x
  3. Step 3: Cross multiply
    5,292x = 7,940.16 × 3,903.12
  4. Step 4: Simplify right side
    5,292x = 30,991,397.30
  5. Step 5: Solve for x
    x = 30,991,397.30/5,292
  6. Step 6: Final answer
    x = 5,856.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.