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Finding the Fourth Proportional to 8,716.70, 13,079.10 and 4,561.40

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Solution

The fourth proportional to 8,716.70, 13,079.10 and 4,561.40 is: 6,844.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.70 : 13,079.10 = 4,561.40 : x
  2. Step 2: Convert to fraction form
    8,716.70/13,079.10 = 4,561.40/x
  3. Step 3: Cross multiply
    8,716.70x = 13,079.10 × 4,561.40
  4. Step 4: Simplify right side
    8,716.70x = 59,659,006.74
  5. Step 5: Solve for x
    x = 59,659,006.74/8,716.70
  6. Step 6: Final answer
    x = 6,844.22

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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.