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Finding the Fourth Proportional to 3,869.57, 5,340.11 and 2,276.33

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Solution

The fourth proportional to 3,869.57, 5,340.11 and 2,276.33 is: 3,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.57 : 5,340.11 = 2,276.33 : x
  2. Step 2: Convert to fraction form
    3,869.57/5,340.11 = 2,276.33/x
  3. Step 3: Cross multiply
    3,869.57x = 5,340.11 × 2,276.33
  4. Step 4: Simplify right side
    3,869.57x = 12,155,871.64
  5. Step 5: Solve for x
    x = 12,155,871.64/3,869.57
  6. Step 6: Final answer
    x = 3,141.40

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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.