Home / 5,124.28-7,687.88-1,661.80

Finding the Fourth Proportional to 5,124.28, 7,687.88 and 1,661.80

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Solution

The fourth proportional to 5,124.28, 7,687.88 and 1,661.80 is: 2,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.28 : 7,687.88 = 1,661.80 : x
  2. Step 2: Convert to fraction form
    5,124.28/7,687.88 = 1,661.80/x
  3. Step 3: Cross multiply
    5,124.28x = 7,687.88 × 1,661.80
  4. Step 4: Simplify right side
    5,124.28x = 12,775,718.98
  5. Step 5: Solve for x
    x = 12,775,718.98/5,124.28
  6. Step 6: Final answer
    x = 2,493.17

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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.