Home / 8,626.50-12,938.67-2,781.54

Finding the Fourth Proportional to 8,626.50, 12,938.67 and 2,781.54

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Solution

The fourth proportional to 8,626.50, 12,938.67 and 2,781.54 is: 4,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.50 : 12,938.67 = 2,781.54 : x
  2. Step 2: Convert to fraction form
    8,626.50/12,938.67 = 2,781.54/x
  3. Step 3: Cross multiply
    8,626.50x = 12,938.67 × 2,781.54
  4. Step 4: Simplify right side
    8,626.50x = 35,989,428.15
  5. Step 5: Solve for x
    x = 35,989,428.15/8,626.50
  6. Step 6: Final answer
    x = 4,171.96

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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.