Home / 6,432.78-9,658.10-3,315.02

Finding the Fourth Proportional to 6,432.78, 9,658.10 and 3,315.02

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Solution

The fourth proportional to 6,432.78, 9,658.10 and 3,315.02 is: 4,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,432.78 : 9,658.10 = 3,315.02 : x
  2. Step 2: Convert to fraction form
    6,432.78/9,658.10 = 3,315.02/x
  3. Step 3: Cross multiply
    6,432.78x = 9,658.10 × 3,315.02
  4. Step 4: Simplify right side
    6,432.78x = 32,016,794.66
  5. Step 5: Solve for x
    x = 32,016,794.66/6,432.78
  6. Step 6: Final answer
    x = 4,977.13

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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.