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Finding the Fourth Proportional to 8,938.38, 13,407.83 and 4,258.88

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Solution

The fourth proportional to 8,938.38, 13,407.83 and 4,258.88 is: 6,388.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.38 : 13,407.83 = 4,258.88 : x
  2. Step 2: Convert to fraction form
    8,938.38/13,407.83 = 4,258.88/x
  3. Step 3: Cross multiply
    8,938.38x = 13,407.83 × 4,258.88
  4. Step 4: Simplify right side
    8,938.38x = 57,102,316.95
  5. Step 5: Solve for x
    x = 57,102,316.95/8,938.38
  6. Step 6: Final answer
    x = 6,388.44

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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.