Home / 6,418.18-9,630.35-3,129.48

Finding the Fourth Proportional to 6,418.18, 9,630.35 and 3,129.48

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Solution

The fourth proportional to 6,418.18, 9,630.35 and 3,129.48 is: 4,695.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.18 : 9,630.35 = 3,129.48 : x
  2. Step 2: Convert to fraction form
    6,418.18/9,630.35 = 3,129.48/x
  3. Step 3: Cross multiply
    6,418.18x = 9,630.35 × 3,129.48
  4. Step 4: Simplify right side
    6,418.18x = 30,137,923.92
  5. Step 5: Solve for x
    x = 30,137,923.92/6,418.18
  6. Step 6: Final answer
    x = 4,695.72

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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.