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Finding the Fourth Proportional to 6,438.48, 9,655.24 and 2,742.46

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Solution

The fourth proportional to 6,438.48, 9,655.24 and 2,742.46 is: 4,112.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.48 : 9,655.24 = 2,742.46 : x
  2. Step 2: Convert to fraction form
    6,438.48/9,655.24 = 2,742.46/x
  3. Step 3: Cross multiply
    6,438.48x = 9,655.24 × 2,742.46
  4. Step 4: Simplify right side
    6,438.48x = 26,479,109.49
  5. Step 5: Solve for x
    x = 26,479,109.49/6,438.48
  6. Step 6: Final answer
    x = 4,112.63

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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.