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Finding the Fourth Proportional to 8,938.79, 13,410.46 and 5,244.28

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Solution

The fourth proportional to 8,938.79, 13,410.46 and 5,244.28 is: 7,867.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.79 : 13,410.46 = 5,244.28 : x
  2. Step 2: Convert to fraction form
    8,938.79/13,410.46 = 5,244.28/x
  3. Step 3: Cross multiply
    8,938.79x = 13,410.46 × 5,244.28
  4. Step 4: Simplify right side
    8,938.79x = 70,328,207.17
  5. Step 5: Solve for x
    x = 70,328,207.17/8,938.79
  6. Step 6: Final answer
    x = 7,867.75

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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.