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Finding the Fourth Proportional to 3,307.91, 4,959.23 and 1,640.86

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Solution

The fourth proportional to 3,307.91, 4,959.23 and 1,640.86 is: 2,459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.91 : 4,959.23 = 1,640.86 : x
  2. Step 2: Convert to fraction form
    3,307.91/4,959.23 = 1,640.86/x
  3. Step 3: Cross multiply
    3,307.91x = 4,959.23 × 1,640.86
  4. Step 4: Simplify right side
    3,307.91x = 8,137,402.14
  5. Step 5: Solve for x
    x = 8,137,402.14/3,307.91
  6. Step 6: Final answer
    x = 2,459.98

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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.