Home / 3,860.48-5,321.89-2,531.88

Finding the Fourth Proportional to 3,860.48, 5,321.89 and 2,531.88

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Solution

The fourth proportional to 3,860.48, 5,321.89 and 2,531.88 is: 3,490.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.48 : 5,321.89 = 2,531.88 : x
  2. Step 2: Convert to fraction form
    3,860.48/5,321.89 = 2,531.88/x
  3. Step 3: Cross multiply
    3,860.48x = 5,321.89 × 2,531.88
  4. Step 4: Simplify right side
    3,860.48x = 13,474,386.85
  5. Step 5: Solve for x
    x = 13,474,386.85/3,860.48
  6. Step 6: Final answer
    x = 3,490.34

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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.