Home / 2,265.95-3,126.79-1,381.57

Finding the Fourth Proportional to 2,265.95, 3,126.79 and 1,381.57

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Solution

The fourth proportional to 2,265.95, 3,126.79 and 1,381.57 is: 1,906.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.95 : 3,126.79 = 1,381.57 : x
  2. Step 2: Convert to fraction form
    2,265.95/3,126.79 = 1,381.57/x
  3. Step 3: Cross multiply
    2,265.95x = 3,126.79 × 1,381.57
  4. Step 4: Simplify right side
    2,265.95x = 4,319,879.26
  5. Step 5: Solve for x
    x = 4,319,879.26/2,265.95
  6. Step 6: Final answer
    x = 1,906.43

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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.