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Finding the Fourth Proportional to 4,438.80, 6,643.80 and 3,459.60

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Solution

The fourth proportional to 4,438.80, 6,643.80 and 3,459.60 is: 5,178.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,438.80 : 6,643.80 = 3,459.60 : x
  2. Step 2: Convert to fraction form
    4,438.80/6,643.80 = 3,459.60/x
  3. Step 3: Cross multiply
    4,438.80x = 6,643.80 × 3,459.60
  4. Step 4: Simplify right side
    4,438.80x = 22,984,890.48
  5. Step 5: Solve for x
    x = 22,984,890.48/4,438.80
  6. Step 6: Final answer
    x = 5,178.18

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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.