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Finding the Fourth Proportional to 8,720.05, 12,033.61 and 4,741.17

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Solution

The fourth proportional to 8,720.05, 12,033.61 and 4,741.17 is: 6,542.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.05 : 12,033.61 = 4,741.17 : x
  2. Step 2: Convert to fraction form
    8,720.05/12,033.61 = 4,741.17/x
  3. Step 3: Cross multiply
    8,720.05x = 12,033.61 × 4,741.17
  4. Step 4: Simplify right side
    8,720.05x = 57,053,342.63
  5. Step 5: Solve for x
    x = 57,053,342.63/8,720.05
  6. Step 6: Final answer
    x = 6,542.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.