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Finding the Fourth Proportional to 3,129.48, 4,697.16 and 1,487.16

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Solution

The fourth proportional to 3,129.48, 4,697.16 and 1,487.16 is: 2,232.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.48 : 4,697.16 = 1,487.16 : x
  2. Step 2: Convert to fraction form
    3,129.48/4,697.16 = 1,487.16/x
  3. Step 3: Cross multiply
    3,129.48x = 4,697.16 × 1,487.16
  4. Step 4: Simplify right side
    3,129.48x = 6,985,428.47
  5. Step 5: Solve for x
    x = 6,985,428.47/3,129.48
  6. Step 6: Final answer
    x = 2,232.14

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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.