Home / 3,890.50-5,367.15-2,397.87

Finding the Fourth Proportional to 3,890.50, 5,367.15 and 2,397.87

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Solution

The fourth proportional to 3,890.50, 5,367.15 and 2,397.87 is: 3,307.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.50 : 5,367.15 = 2,397.87 : x
  2. Step 2: Convert to fraction form
    3,890.50/5,367.15 = 2,397.87/x
  3. Step 3: Cross multiply
    3,890.50x = 5,367.15 × 2,397.87
  4. Step 4: Simplify right side
    3,890.50x = 12,869,727.97
  5. Step 5: Solve for x
    x = 12,869,727.97/3,890.50
  6. Step 6: Final answer
    x = 3,307.99

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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.