Home / 2,275.98-3,140.97-1,281.24

Finding the Fourth Proportional to 2,275.98, 3,140.97 and 1,281.24

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Solution

The fourth proportional to 2,275.98, 3,140.97 and 1,281.24 is: 1,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.98 : 3,140.97 = 1,281.24 : x
  2. Step 2: Convert to fraction form
    2,275.98/3,140.97 = 1,281.24/x
  3. Step 3: Cross multiply
    2,275.98x = 3,140.97 × 1,281.24
  4. Step 4: Simplify right side
    2,275.98x = 4,024,336.40
  5. Step 5: Solve for x
    x = 4,024,336.40/2,275.98
  6. Step 6: Final answer
    x = 1,768.18

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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.