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Finding the Fourth Proportional to 1,861.88, 2,569.39 and 1,033.88

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Solution

The fourth proportional to 1,861.88, 2,569.39 and 1,033.88 is: 1,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.88 : 2,569.39 = 1,033.88 : x
  2. Step 2: Convert to fraction form
    1,861.88/2,569.39 = 1,033.88/x
  3. Step 3: Cross multiply
    1,861.88x = 2,569.39 × 1,033.88
  4. Step 4: Simplify right side
    1,861.88x = 2,656,425.50
  5. Step 5: Solve for x
    x = 2,656,425.50/1,861.88
  6. Step 6: Final answer
    x = 1,426.75

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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.