Home / 4,308.40-6,455.40-3,689.20

Finding the Fourth Proportional to 4,308.40, 6,455.40 and 3,689.20

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Solution

The fourth proportional to 4,308.40, 6,455.40 and 3,689.20 is: 5,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,308.40 : 6,455.40 = 3,689.20 : x
  2. Step 2: Convert to fraction form
    4,308.40/6,455.40 = 3,689.20/x
  3. Step 3: Cross multiply
    4,308.40x = 6,455.40 × 3,689.20
  4. Step 4: Simplify right side
    4,308.40x = 23,815,261.68
  5. Step 5: Solve for x
    x = 23,815,261.68/4,308.40
  6. Step 6: Final answer
    x = 5,527.63

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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.