Home / 2,381.85-3,291.48-1,791.36

Finding the Fourth Proportional to 2,381.85, 3,291.48 and 1,791.36

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Solution

The fourth proportional to 2,381.85, 3,291.48 and 1,791.36 is: 2,475.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.85 : 3,291.48 = 1,791.36 : x
  2. Step 2: Convert to fraction form
    2,381.85/3,291.48 = 1,791.36/x
  3. Step 3: Cross multiply
    2,381.85x = 3,291.48 × 1,791.36
  4. Step 4: Simplify right side
    2,381.85x = 5,896,225.61
  5. Step 5: Solve for x
    x = 5,896,225.61/2,381.85
  6. Step 6: Final answer
    x = 2,475.48

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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.