Home / 3,315.60-4,965.30-2,489.40

Finding the Fourth Proportional to 3,315.60, 4,965.30 and 2,489.40

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Solution

The fourth proportional to 3,315.60, 4,965.30 and 2,489.40 is: 3,728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.60 : 4,965.30 = 2,489.40 : x
  2. Step 2: Convert to fraction form
    3,315.60/4,965.30 = 2,489.40/x
  3. Step 3: Cross multiply
    3,315.60x = 4,965.30 × 2,489.40
  4. Step 4: Simplify right side
    3,315.60x = 12,360,617.82
  5. Step 5: Solve for x
    x = 12,360,617.82/3,315.60
  6. Step 6: Final answer
    x = 3,728.02

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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.