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Finding the Fourth Proportional to 8,734.20, 13,133.70 and 7,308.60

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Solution

The fourth proportional to 8,734.20, 13,133.70 and 7,308.60 is: 10,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,734.20 : 13,133.70 = 7,308.60 : x
  2. Step 2: Convert to fraction form
    8,734.20/13,133.70 = 7,308.60/x
  3. Step 3: Cross multiply
    8,734.20x = 13,133.70 × 7,308.60
  4. Step 4: Simplify right side
    8,734.20x = 95,988,959.82
  5. Step 5: Solve for x
    x = 95,988,959.82/8,734.20
  6. Step 6: Final answer
    x = 10,990.01

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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.