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Finding the Fourth Proportional to 1,876.53, 2,816.49 and 999.76

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Solution

The fourth proportional to 1,876.53, 2,816.49 and 999.76 is: 1,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.53 : 2,816.49 = 999.76 : x
  2. Step 2: Convert to fraction form
    1,876.53/2,816.49 = 999.76/x
  3. Step 3: Cross multiply
    1,876.53x = 2,816.49 × 999.76
  4. Step 4: Simplify right side
    1,876.53x = 2,815,821.31
  5. Step 5: Solve for x
    x = 2,815,821.31/1,876.53
  6. Step 6: Final answer
    x = 1,500.55

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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.