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Finding the Fourth Proportional to 3,439.47, 5,159.53 and 974.30

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Solution

The fourth proportional to 3,439.47, 5,159.53 and 974.30 is: 1,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.47 : 5,159.53 = 974.30 : x
  2. Step 2: Convert to fraction form
    3,439.47/5,159.53 = 974.30/x
  3. Step 3: Cross multiply
    3,439.47x = 5,159.53 × 974.30
  4. Step 4: Simplify right side
    3,439.47x = 5,026,930.08
  5. Step 5: Solve for x
    x = 5,026,930.08/3,439.47
  6. Step 6: Final answer
    x = 1,461.54

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1.5x scale

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.