Home / 2,261.13-3,119.43-1,377.43

Finding the Fourth Proportional to 2,261.13, 3,119.43 and 1,377.43

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Solution

The fourth proportional to 2,261.13, 3,119.43 and 1,377.43 is: 1,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.13 : 3,119.43 = 1,377.43 : x
  2. Step 2: Convert to fraction form
    2,261.13/3,119.43 = 1,377.43/x
  3. Step 3: Cross multiply
    2,261.13x = 3,119.43 × 1,377.43
  4. Step 4: Simplify right side
    2,261.13x = 4,296,796.46
  5. Step 5: Solve for x
    x = 4,296,796.46/2,261.13
  6. Step 6: Final answer
    x = 1,900.29

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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.