Home / 5,358.39-7,398.50-3,869.61

Finding the Fourth Proportional to 5,358.39, 7,398.50 and 3,869.61

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Solution

The fourth proportional to 5,358.39, 7,398.50 and 3,869.61 is: 5,342.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.39 : 7,398.50 = 3,869.61 : x
  2. Step 2: Convert to fraction form
    5,358.39/7,398.50 = 3,869.61/x
  3. Step 3: Cross multiply
    5,358.39x = 7,398.50 × 3,869.61
  4. Step 4: Simplify right side
    5,358.39x = 28,629,290.24
  5. Step 5: Solve for x
    x = 28,629,290.24/5,358.39
  6. Step 6: Final answer
    x = 5,342.89

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1.5x scale

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.