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Finding the Fourth Proportional to 8,754.79, 13,132.30 and 2,911.40

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Solution

The fourth proportional to 8,754.79, 13,132.30 and 2,911.40 is: 4,367.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.79 : 13,132.30 = 2,911.40 : x
  2. Step 2: Convert to fraction form
    8,754.79/13,132.30 = 2,911.40/x
  3. Step 3: Cross multiply
    8,754.79x = 13,132.30 × 2,911.40
  4. Step 4: Simplify right side
    8,754.79x = 38,233,363.66
  5. Step 5: Solve for x
    x = 38,233,363.66/8,754.79
  6. Step 6: Final answer
    x = 4,367.14

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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.