Home / 5,126.45-7,689.27-1,839.20

Finding the Fourth Proportional to 5,126.45, 7,689.27 and 1,839.20

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Solution

The fourth proportional to 5,126.45, 7,689.27 and 1,839.20 is: 2,758.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.45 : 7,689.27 = 1,839.20 : x
  2. Step 2: Convert to fraction form
    5,126.45/7,689.27 = 1,839.20/x
  3. Step 3: Cross multiply
    5,126.45x = 7,689.27 × 1,839.20
  4. Step 4: Simplify right side
    5,126.45x = 14,142,105.38
  5. Step 5: Solve for x
    x = 14,142,105.38/5,126.45
  6. Step 6: Final answer
    x = 2,758.65

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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.