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Finding the Fourth Proportional to 8,754.40, 13,129.20 and 3,560.80

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Solution

The fourth proportional to 8,754.40, 13,129.20 and 3,560.80 is: 5,340.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.40 : 13,129.20 = 3,560.80 : x
  2. Step 2: Convert to fraction form
    8,754.40/13,129.20 = 3,560.80/x
  3. Step 3: Cross multiply
    8,754.40x = 13,129.20 × 3,560.80
  4. Step 4: Simplify right side
    8,754.40x = 46,750,455.36
  5. Step 5: Solve for x
    x = 46,750,455.36/8,754.40
  6. Step 6: Final answer
    x = 5,340.22

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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.