Home / 3,968.87-5,472.55-2,531.31

Finding the Fourth Proportional to 3,968.87, 5,472.55 and 2,531.31

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Solution

The fourth proportional to 3,968.87, 5,472.55 and 2,531.31 is: 3,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.87 : 5,472.55 = 2,531.31 : x
  2. Step 2: Convert to fraction form
    3,968.87/5,472.55 = 2,531.31/x
  3. Step 3: Cross multiply
    3,968.87x = 5,472.55 × 2,531.31
  4. Step 4: Simplify right side
    3,968.87x = 13,852,742.24
  5. Step 5: Solve for x
    x = 13,852,742.24/3,968.87
  6. Step 6: Final answer
    x = 3,490.35

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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.