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Finding the Fourth Proportional to 3,124.97, 4,687.55 and 1,277.97

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Solution

The fourth proportional to 3,124.97, 4,687.55 and 1,277.97 is: 1,916.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.97 : 4,687.55 = 1,277.97 : x
  2. Step 2: Convert to fraction form
    3,124.97/4,687.55 = 1,277.97/x
  3. Step 3: Cross multiply
    3,124.97x = 4,687.55 × 1,277.97
  4. Step 4: Simplify right side
    3,124.97x = 5,990,548.27
  5. Step 5: Solve for x
    x = 5,990,548.27/3,124.97
  6. Step 6: Final answer
    x = 1,916.99

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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.