Home / 5,438.92-8,159.40-2,318.88

Finding the Fourth Proportional to 5,438.92, 8,159.40 and 2,318.88

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Solution

The fourth proportional to 5,438.92, 8,159.40 and 2,318.88 is: 3,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.92 : 8,159.40 = 2,318.88 : x
  2. Step 2: Convert to fraction form
    5,438.92/8,159.40 = 2,318.88/x
  3. Step 3: Cross multiply
    5,438.92x = 8,159.40 × 2,318.88
  4. Step 4: Simplify right side
    5,438.92x = 18,920,669.47
  5. Step 5: Solve for x
    x = 18,920,669.47/5,438.92
  6. Step 6: Final answer
    x = 3,478.75

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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.