Home / 2,265.90-3,126.97-1,271.15

Finding the Fourth Proportional to 2,265.90, 3,126.97 and 1,271.15

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Solution

The fourth proportional to 2,265.90, 3,126.97 and 1,271.15 is: 1,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.90 : 3,126.97 = 1,271.15 : x
  2. Step 2: Convert to fraction form
    2,265.90/3,126.97 = 1,271.15/x
  3. Step 3: Cross multiply
    2,265.90x = 3,126.97 × 1,271.15
  4. Step 4: Simplify right side
    2,265.90x = 3,974,847.92
  5. Step 5: Solve for x
    x = 3,974,847.92/2,265.90
  6. Step 6: Final answer
    x = 1,754.20

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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.