Home / 3,489.30-4,818.15-2,315.61

Finding the Fourth Proportional to 3,489.30, 4,818.15 and 2,315.61

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Solution

The fourth proportional to 3,489.30, 4,818.15 and 2,315.61 is: 3,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.30 : 4,818.15 = 2,315.61 : x
  2. Step 2: Convert to fraction form
    3,489.30/4,818.15 = 2,315.61/x
  3. Step 3: Cross multiply
    3,489.30x = 4,818.15 × 2,315.61
  4. Step 4: Simplify right side
    3,489.30x = 11,156,956.32
  5. Step 5: Solve for x
    x = 11,156,956.32/3,489.30
  6. Step 6: Final answer
    x = 3,197.48

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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.