Home / 6,620.11-9,915.04-3,159.79

Finding the Fourth Proportional to 6,620.11, 9,915.04 and 3,159.79

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Solution

The fourth proportional to 6,620.11, 9,915.04 and 3,159.79 is: 4,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.11 : 9,915.04 = 3,159.79 : x
  2. Step 2: Convert to fraction form
    6,620.11/9,915.04 = 3,159.79/x
  3. Step 3: Cross multiply
    6,620.11x = 9,915.04 × 3,159.79
  4. Step 4: Simplify right side
    6,620.11x = 31,329,411.55
  5. Step 5: Solve for x
    x = 31,329,411.55/6,620.11
  6. Step 6: Final answer
    x = 4,732.46

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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.