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Finding the Fourth Proportional to 8,989.38, 12,403.88 and 5,010.38

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Solution

The fourth proportional to 8,989.38, 12,403.88 and 5,010.38 is: 6,913.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.38 : 12,403.88 = 5,010.38 : x
  2. Step 2: Convert to fraction form
    8,989.38/12,403.88 = 5,010.38/x
  3. Step 3: Cross multiply
    8,989.38x = 12,403.88 × 5,010.38
  4. Step 4: Simplify right side
    8,989.38x = 62,148,152.27
  5. Step 5: Solve for x
    x = 62,148,152.27/8,989.38
  6. Step 6: Final answer
    x = 6,913.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.