Home / 5,127.72-7,689.54-1,839.80

Finding the Fourth Proportional to 5,127.72, 7,689.54 and 1,839.80

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Solution

The fourth proportional to 5,127.72, 7,689.54 and 1,839.80 is: 2,758.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.72 : 7,689.54 = 1,839.80 : x
  2. Step 2: Convert to fraction form
    5,127.72/7,689.54 = 1,839.80/x
  3. Step 3: Cross multiply
    5,127.72x = 7,689.54 × 1,839.80
  4. Step 4: Simplify right side
    5,127.72x = 14,147,215.69
  5. Step 5: Solve for x
    x = 14,147,215.69/5,127.72
  6. Step 6: Final answer
    x = 2,758.97

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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.