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Finding the Fourth Proportional to 2,807.87, 3,869.69 and 2,250.18

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Solution

The fourth proportional to 2,807.87, 3,869.69 and 2,250.18 is: 3,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.87 : 3,869.69 = 2,250.18 : x
  2. Step 2: Convert to fraction form
    2,807.87/3,869.69 = 2,250.18/x
  3. Step 3: Cross multiply
    2,807.87x = 3,869.69 × 2,250.18
  4. Step 4: Simplify right side
    2,807.87x = 8,707,487.79
  5. Step 5: Solve for x
    x = 8,707,487.79/2,807.87
  6. Step 6: Final answer
    x = 3,101.11

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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.