Home / 1,651.20-2,279.25-1,126.86

Finding the Fourth Proportional to 1,651.20, 2,279.25 and 1,126.86

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Solution

The fourth proportional to 1,651.20, 2,279.25 and 1,126.86 is: 1,555.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.20 : 2,279.25 = 1,126.86 : x
  2. Step 2: Convert to fraction form
    1,651.20/2,279.25 = 1,126.86/x
  3. Step 3: Cross multiply
    1,651.20x = 2,279.25 × 1,126.86
  4. Step 4: Simplify right side
    1,651.20x = 2,568,395.66
  5. Step 5: Solve for x
    x = 2,568,395.66/1,651.20
  6. Step 6: Final answer
    x = 1,555.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.