Home / 8,438.93-12,651.42-5,318.06

Finding the Fourth Proportional to 8,438.93, 12,651.42 and 5,318.06

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Solution

The fourth proportional to 8,438.93, 12,651.42 and 5,318.06 is: 7,972.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.93 : 12,651.42 = 5,318.06 : x
  2. Step 2: Convert to fraction form
    8,438.93/12,651.42 = 5,318.06/x
  3. Step 3: Cross multiply
    8,438.93x = 12,651.42 × 5,318.06
  4. Step 4: Simplify right side
    8,438.93x = 67,280,922.46
  5. Step 5: Solve for x
    x = 67,280,922.46/8,438.93
  6. Step 6: Final answer
    x = 7,972.68

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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.