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Finding the Fourth Proportional to 1,861.04, 2,792.38 and 887.88

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Solution

The fourth proportional to 1,861.04, 2,792.38 and 887.88 is: 1,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.04 : 2,792.38 = 887.88 : x
  2. Step 2: Convert to fraction form
    1,861.04/2,792.38 = 887.88/x
  3. Step 3: Cross multiply
    1,861.04x = 2,792.38 × 887.88
  4. Step 4: Simplify right side
    1,861.04x = 2,479,298.35
  5. Step 5: Solve for x
    x = 2,479,298.35/1,861.04
  6. Step 6: Final answer
    x = 1,332.21

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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.