Home / 3,191.13-4,787.24-999.43

Finding the Fourth Proportional to 3,191.13, 4,787.24 and 999.43

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Solution

The fourth proportional to 3,191.13, 4,787.24 and 999.43 is: 1,499.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.13 : 4,787.24 = 999.43 : x
  2. Step 2: Convert to fraction form
    3,191.13/4,787.24 = 999.43/x
  3. Step 3: Cross multiply
    3,191.13x = 4,787.24 × 999.43
  4. Step 4: Simplify right side
    3,191.13x = 4,784,511.27
  5. Step 5: Solve for x
    x = 4,784,511.27/3,191.13
  6. Step 6: Final answer
    x = 1,499.32

Related Problems

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Double scale
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Similar ratio
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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.