Home / 2,319.27-3,478.80-675.78

Finding the Fourth Proportional to 2,319.27, 3,478.80 and 675.78

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Solution

The fourth proportional to 2,319.27, 3,478.80 and 675.78 is: 1,013.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.27 : 3,478.80 = 675.78 : x
  2. Step 2: Convert to fraction form
    2,319.27/3,478.80 = 675.78/x
  3. Step 3: Cross multiply
    2,319.27x = 3,478.80 × 675.78
  4. Step 4: Simplify right side
    2,319.27x = 2,350,903.46
  5. Step 5: Solve for x
    x = 2,350,903.46/2,319.27
  6. Step 6: Final answer
    x = 1,013.64

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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.