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Finding the Fourth Proportional to 4,654.16, 6,981.28 and 1,191.68

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Solution

The fourth proportional to 4,654.16, 6,981.28 and 1,191.68 is: 1,787.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,654.16 : 6,981.28 = 1,191.68 : x
  2. Step 2: Convert to fraction form
    4,654.16/6,981.28 = 1,191.68/x
  3. Step 3: Cross multiply
    4,654.16x = 6,981.28 × 1,191.68
  4. Step 4: Simplify right side
    4,654.16x = 8,319,451.75
  5. Step 5: Solve for x
    x = 8,319,451.75/4,654.16
  6. Step 6: Final answer
    x = 1,787.53

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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.