Home / 3,938.12-5,435.53-2,447.16

Finding the Fourth Proportional to 3,938.12, 5,435.53 and 2,447.16

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Solution

The fourth proportional to 3,938.12, 5,435.53 and 2,447.16 is: 3,377.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.12 : 5,435.53 = 2,447.16 : x
  2. Step 2: Convert to fraction form
    3,938.12/5,435.53 = 2,447.16/x
  3. Step 3: Cross multiply
    3,938.12x = 5,435.53 × 2,447.16
  4. Step 4: Simplify right side
    3,938.12x = 13,301,622.55
  5. Step 5: Solve for x
    x = 13,301,622.55/3,938.12
  6. Step 6: Final answer
    x = 3,377.66

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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.