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Finding the Fourth Proportional to 8,938.32, 12,334.79 and 4,959.33

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Solution

The fourth proportional to 8,938.32, 12,334.79 and 4,959.33 is: 6,843.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.32 : 12,334.79 = 4,959.33 : x
  2. Step 2: Convert to fraction form
    8,938.32/12,334.79 = 4,959.33/x
  3. Step 3: Cross multiply
    8,938.32x = 12,334.79 × 4,959.33
  4. Step 4: Simplify right side
    8,938.32x = 61,172,294.09
  5. Step 5: Solve for x
    x = 61,172,294.09/8,938.32
  6. Step 6: Final answer
    x = 6,843.82

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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.