Home / 3,151.26-4,347.18-1,891.71

Finding the Fourth Proportional to 3,151.26, 4,347.18 and 1,891.71

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Solution

The fourth proportional to 3,151.26, 4,347.18 and 1,891.71 is: 2,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.26 : 4,347.18 = 1,891.71 : x
  2. Step 2: Convert to fraction form
    3,151.26/4,347.18 = 1,891.71/x
  3. Step 3: Cross multiply
    3,151.26x = 4,347.18 × 1,891.71
  4. Step 4: Simplify right side
    3,151.26x = 8,223,603.88
  5. Step 5: Solve for x
    x = 8,223,603.88/3,151.26
  6. Step 6: Final answer
    x = 2,609.62

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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.