Home / 3,077.92-4,619.12-1,540

Finding the Fourth Proportional to 3,077.92, 4,619.12 and 1,540

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Solution

The fourth proportional to 3,077.92, 4,619.12 and 1,540 is: 2,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.92 : 4,619.12 = 1,540 : x
  2. Step 2: Convert to fraction form
    3,077.92/4,619.12 = 1,540/x
  3. Step 3: Cross multiply
    3,077.92x = 4,619.12 × 1,540
  4. Step 4: Simplify right side
    3,077.92x = 7,113,444.80
  5. Step 5: Solve for x
    x = 7,113,444.80/3,077.92
  6. Step 6: Final answer
    x = 2,311.12

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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.