Home / 2,265.90-3,127.23-1,381.68

Finding the Fourth Proportional to 2,265.90, 3,127.23 and 1,381.68

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Solution

The fourth proportional to 2,265.90, 3,127.23 and 1,381.68 is: 1,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.90 : 3,127.23 = 1,381.68 : x
  2. Step 2: Convert to fraction form
    2,265.90/3,127.23 = 1,381.68/x
  3. Step 3: Cross multiply
    2,265.90x = 3,127.23 × 1,381.68
  4. Step 4: Simplify right side
    2,265.90x = 4,320,831.15
  5. Step 5: Solve for x
    x = 4,320,831.15/2,265.90
  6. Step 6: Final answer
    x = 1,906.89

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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.