Home / 3,113.40-4,294.62-2,449.20

Finding the Fourth Proportional to 3,113.40, 4,294.62 and 2,449.20

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Solution

The fourth proportional to 3,113.40, 4,294.62 and 2,449.20 is: 3,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.40 : 4,294.62 = 2,449.20 : x
  2. Step 2: Convert to fraction form
    3,113.40/4,294.62 = 2,449.20/x
  3. Step 3: Cross multiply
    3,113.40x = 4,294.62 × 2,449.20
  4. Step 4: Simplify right side
    3,113.40x = 10,518,383.30
  5. Step 5: Solve for x
    x = 10,518,383.30/3,113.40
  6. Step 6: Final answer
    x = 3,378.42

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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.