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Finding the Fourth Proportional to 2,962.60, 4,443.90 and 2,649.40

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Solution

The fourth proportional to 2,962.60, 4,443.90 and 2,649.40 is: 3,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,962.60 : 4,443.90 = 2,649.40 : x
  2. Step 2: Convert to fraction form
    2,962.60/4,443.90 = 2,649.40/x
  3. Step 3: Cross multiply
    2,962.60x = 4,443.90 × 2,649.40
  4. Step 4: Simplify right side
    2,962.60x = 11,773,668.66
  5. Step 5: Solve for x
    x = 11,773,668.66/2,962.60
  6. Step 6: Final answer
    x = 3,974.10

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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.