Home / 8,958.38-13,438.20-2,718.90

Finding the Fourth Proportional to 8,958.38, 13,438.20 and 2,718.90

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Solution

The fourth proportional to 8,958.38, 13,438.20 and 2,718.90 is: 4,078.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.38 : 13,438.20 = 2,718.90 : x
  2. Step 2: Convert to fraction form
    8,958.38/13,438.20 = 2,718.90/x
  3. Step 3: Cross multiply
    8,958.38x = 13,438.20 × 2,718.90
  4. Step 4: Simplify right side
    8,958.38x = 36,537,132.18
  5. Step 5: Solve for x
    x = 36,537,132.18/8,958.38
  6. Step 6: Final answer
    x = 4,078.54

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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.