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Finding the Fourth Proportional to 3,543.10, 5,314.65 and 910.60

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Solution

The fourth proportional to 3,543.10, 5,314.65 and 910.60 is: 1,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.10 : 5,314.65 = 910.60 : x
  2. Step 2: Convert to fraction form
    3,543.10/5,314.65 = 910.60/x
  3. Step 3: Cross multiply
    3,543.10x = 5,314.65 × 910.60
  4. Step 4: Simplify right side
    3,543.10x = 4,839,520.29
  5. Step 5: Solve for x
    x = 4,839,520.29/3,543.10
  6. Step 6: Final answer
    x = 1,365.90

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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.