Home / 2,275.80-3,139.98-1,344.12

Finding the Fourth Proportional to 2,275.80, 3,139.98 and 1,344.12

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Solution

The fourth proportional to 2,275.80, 3,139.98 and 1,344.12 is: 1,854.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.80 : 3,139.98 = 1,344.12 : x
  2. Step 2: Convert to fraction form
    2,275.80/3,139.98 = 1,344.12/x
  3. Step 3: Cross multiply
    2,275.80x = 3,139.98 × 1,344.12
  4. Step 4: Simplify right side
    2,275.80x = 4,220,509.92
  5. Step 5: Solve for x
    x = 4,220,509.92/2,275.80
  6. Step 6: Final answer
    x = 1,854.52

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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.