Home / 5,781.19-8,672.87-2,318.71

Finding the Fourth Proportional to 5,781.19, 8,672.87 and 2,318.71

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Solution

The fourth proportional to 5,781.19, 8,672.87 and 2,318.71 is: 3,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.19 : 8,672.87 = 2,318.71 : x
  2. Step 2: Convert to fraction form
    5,781.19/8,672.87 = 2,318.71/x
  3. Step 3: Cross multiply
    5,781.19x = 8,672.87 × 2,318.71
  4. Step 4: Simplify right side
    5,781.19x = 20,109,870.40
  5. Step 5: Solve for x
    x = 20,109,870.40/5,781.19
  6. Step 6: Final answer
    x = 3,478.50

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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.