Home / 4,478.13-6,721.38-2,288.43

Finding the Fourth Proportional to 4,478.13, 6,721.38 and 2,288.43

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Solution

The fourth proportional to 4,478.13, 6,721.38 and 2,288.43 is: 3,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.13 : 6,721.38 = 2,288.43 : x
  2. Step 2: Convert to fraction form
    4,478.13/6,721.38 = 2,288.43/x
  3. Step 3: Cross multiply
    4,478.13x = 6,721.38 × 2,288.43
  4. Step 4: Simplify right side
    4,478.13x = 15,381,407.63
  5. Step 5: Solve for x
    x = 15,381,407.63/4,478.13
  6. Step 6: Final answer
    x = 3,434.78

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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.