Home / 3,865.68-5,334.84-2,540.16

Finding the Fourth Proportional to 3,865.68, 5,334.84 and 2,540.16

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Solution

The fourth proportional to 3,865.68, 5,334.84 and 2,540.16 is: 3,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.68 : 5,334.84 = 2,540.16 : x
  2. Step 2: Convert to fraction form
    3,865.68/5,334.84 = 2,540.16/x
  3. Step 3: Cross multiply
    3,865.68x = 5,334.84 × 2,540.16
  4. Step 4: Simplify right side
    3,865.68x = 13,551,347.17
  5. Step 5: Solve for x
    x = 13,551,347.17/3,865.68
  6. Step 6: Final answer
    x = 3,505.55

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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.