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Finding the Fourth Proportional to 6,648.72, 9,973.40 and 2,489.80

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Solution

The fourth proportional to 6,648.72, 9,973.40 and 2,489.80 is: 3,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.72 : 9,973.40 = 2,489.80 : x
  2. Step 2: Convert to fraction form
    6,648.72/9,973.40 = 2,489.80/x
  3. Step 3: Cross multiply
    6,648.72x = 9,973.40 × 2,489.80
  4. Step 4: Simplify right side
    6,648.72x = 24,831,771.32
  5. Step 5: Solve for x
    x = 24,831,771.32/6,648.72
  6. Step 6: Final answer
    x = 3,734.82

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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.