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Finding the Fourth Proportional to 3,191.39, 4,787.03 and 1,000.13

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Solution

The fourth proportional to 3,191.39, 4,787.03 and 1,000.13 is: 1,500.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.39 : 4,787.03 = 1,000.13 : x
  2. Step 2: Convert to fraction form
    3,191.39/4,787.03 = 1,000.13/x
  3. Step 3: Cross multiply
    3,191.39x = 4,787.03 × 1,000.13
  4. Step 4: Simplify right side
    3,191.39x = 4,787,623.38
  5. Step 5: Solve for x
    x = 4,787,623.38/3,191.39
  6. Step 6: Final answer
    x = 1,500.17

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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.