Home / 2,962.88-4,089.96-2,489.12

Finding the Fourth Proportional to 2,962.88, 4,089.96 and 2,489.12

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Solution

The fourth proportional to 2,962.88, 4,089.96 and 2,489.12 is: 3,435.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,962.88 : 4,089.96 = 2,489.12 : x
  2. Step 2: Convert to fraction form
    2,962.88/4,089.96 = 2,489.12/x
  3. Step 3: Cross multiply
    2,962.88x = 4,089.96 × 2,489.12
  4. Step 4: Simplify right side
    2,962.88x = 10,180,401.24
  5. Step 5: Solve for x
    x = 10,180,401.24/2,962.88
  6. Step 6: Final answer
    x = 3,435.98

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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.