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Finding the Fourth Proportional to 8,938.55, 13,398.48 and 3,013.39

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Solution

The fourth proportional to 8,938.55, 13,398.48 and 3,013.39 is: 4,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.55 : 13,398.48 = 3,013.39 : x
  2. Step 2: Convert to fraction form
    8,938.55/13,398.48 = 3,013.39/x
  3. Step 3: Cross multiply
    8,938.55x = 13,398.48 × 3,013.39
  4. Step 4: Simplify right side
    8,938.55x = 40,374,867.84
  5. Step 5: Solve for x
    x = 40,374,867.84/8,938.55
  6. Step 6: Final answer
    x = 4,516.94

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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.