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Finding the Fourth Proportional to 1,877.27, 2,815.88 and 578.73

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Solution

The fourth proportional to 1,877.27, 2,815.88 and 578.73 is: 868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.27 : 2,815.88 = 578.73 : x
  2. Step 2: Convert to fraction form
    1,877.27/2,815.88 = 578.73/x
  3. Step 3: Cross multiply
    1,877.27x = 2,815.88 × 578.73
  4. Step 4: Simplify right side
    1,877.27x = 1,629,641.90
  5. Step 5: Solve for x
    x = 1,629,641.90/1,877.27
  6. Step 6: Final answer
    x = 868.09

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1.5x scale

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.