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Finding the Fourth Proportional to 3,543.75, 4,890.96 and 2,147.31

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Solution

The fourth proportional to 3,543.75, 4,890.96 and 2,147.31 is: 2,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.75 : 4,890.96 = 2,147.31 : x
  2. Step 2: Convert to fraction form
    3,543.75/4,890.96 = 2,147.31/x
  3. Step 3: Cross multiply
    3,543.75x = 4,890.96 × 2,147.31
  4. Step 4: Simplify right side
    3,543.75x = 10,502,407.32
  5. Step 5: Solve for x
    x = 10,502,407.32/3,543.75
  6. Step 6: Final answer
    x = 2,963.64

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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.