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Finding the Fourth Proportional to 2,179.52, 3,008.16 and 1,432.16

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Solution

The fourth proportional to 2,179.52, 3,008.16 and 1,432.16 is: 1,976.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.52 : 3,008.16 = 1,432.16 : x
  2. Step 2: Convert to fraction form
    2,179.52/3,008.16 = 1,432.16/x
  3. Step 3: Cross multiply
    2,179.52x = 3,008.16 × 1,432.16
  4. Step 4: Simplify right side
    2,179.52x = 4,308,166.43
  5. Step 5: Solve for x
    x = 4,308,166.43/2,179.52
  6. Step 6: Final answer
    x = 1,976.66

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1.5x scale

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.