Home / 3,962.40-5,938.20-2,642.40

Finding the Fourth Proportional to 3,962.40, 5,938.20 and 2,642.40

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Solution

The fourth proportional to 3,962.40, 5,938.20 and 2,642.40 is: 3,960.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,962.40 : 5,938.20 = 2,642.40 : x
  2. Step 2: Convert to fraction form
    3,962.40/5,938.20 = 2,642.40/x
  3. Step 3: Cross multiply
    3,962.40x = 5,938.20 × 2,642.40
  4. Step 4: Simplify right side
    3,962.40x = 15,691,099.68
  5. Step 5: Solve for x
    x = 15,691,099.68/3,962.40
  6. Step 6: Final answer
    x = 3,960.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.