Home / 3,147.90-4,344.57-1,821.66

Finding the Fourth Proportional to 3,147.90, 4,344.57 and 1,821.66

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Solution

The fourth proportional to 3,147.90, 4,344.57 and 1,821.66 is: 2,514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.90 : 4,344.57 = 1,821.66 : x
  2. Step 2: Convert to fraction form
    3,147.90/4,344.57 = 1,821.66/x
  3. Step 3: Cross multiply
    3,147.90x = 4,344.57 × 1,821.66
  4. Step 4: Simplify right side
    3,147.90x = 7,914,329.39
  5. Step 5: Solve for x
    x = 7,914,329.39/3,147.90
  6. Step 6: Final answer
    x = 2,514.16

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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.