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Finding the Fourth Proportional to 6,438.48, 9,655.24 and 2,742.48

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Solution

The fourth proportional to 6,438.48, 9,655.24 and 2,742.48 is: 4,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.48 : 9,655.24 = 2,742.48 : x
  2. Step 2: Convert to fraction form
    6,438.48/9,655.24 = 2,742.48/x
  3. Step 3: Cross multiply
    6,438.48x = 9,655.24 × 2,742.48
  4. Step 4: Simplify right side
    6,438.48x = 26,479,302.60
  5. Step 5: Solve for x
    x = 26,479,302.60/6,438.48
  6. Step 6: Final answer
    x = 4,112.66

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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.