Home / 5,127.75-7,691.63-1,665

Finding the Fourth Proportional to 5,127.75, 7,691.63 and 1,665

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Solution

The fourth proportional to 5,127.75, 7,691.63 and 1,665 is: 2,497.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.75 : 7,691.63 = 1,665 : x
  2. Step 2: Convert to fraction form
    5,127.75/7,691.63 = 1,665/x
  3. Step 3: Cross multiply
    5,127.75x = 7,691.63 × 1,665
  4. Step 4: Simplify right side
    5,127.75x = 12,806,555.63
  5. Step 5: Solve for x
    x = 12,806,555.63/5,127.75
  6. Step 6: Final answer
    x = 2,497.50

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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.