Home / 5,438.90-8,158.77-2,318.92

Finding the Fourth Proportional to 5,438.90, 8,158.77 and 2,318.92

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Solution

The fourth proportional to 5,438.90, 8,158.77 and 2,318.92 is: 3,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.90 : 8,158.77 = 2,318.92 : x
  2. Step 2: Convert to fraction form
    5,438.90/8,158.77 = 2,318.92/x
  3. Step 3: Cross multiply
    5,438.90x = 8,158.77 × 2,318.92
  4. Step 4: Simplify right side
    5,438.90x = 18,919,549.39
  5. Step 5: Solve for x
    x = 18,919,549.39/5,438.90
  6. Step 6: Final answer
    x = 3,478.56

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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.