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Finding the Fourth Proportional to 3,458.52, 4,772.88 and 1,966.40

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Solution

The fourth proportional to 3,458.52, 4,772.88 and 1,966.40 is: 2,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.52 : 4,772.88 = 1,966.40 : x
  2. Step 2: Convert to fraction form
    3,458.52/4,772.88 = 1,966.40/x
  3. Step 3: Cross multiply
    3,458.52x = 4,772.88 × 1,966.40
  4. Step 4: Simplify right side
    3,458.52x = 9,385,391.23
  5. Step 5: Solve for x
    x = 9,385,391.23/3,458.52
  6. Step 6: Final answer
    x = 2,713.70

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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.