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Finding the Fourth Proportional to 5,153.92, 7,731.48 and 1,642.70

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Solution

The fourth proportional to 5,153.92, 7,731.48 and 1,642.70 is: 2,464.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.92 : 7,731.48 = 1,642.70 : x
  2. Step 2: Convert to fraction form
    5,153.92/7,731.48 = 1,642.70/x
  3. Step 3: Cross multiply
    5,153.92x = 7,731.48 × 1,642.70
  4. Step 4: Simplify right side
    5,153.92x = 12,700,502.20
  5. Step 5: Solve for x
    x = 12,700,502.20/5,153.92
  6. Step 6: Final answer
    x = 2,464.24

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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.