Home / 8,679.40-13,022.88-4,294.36

Finding the Fourth Proportional to 8,679.40, 13,022.88 and 4,294.36

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Solution

The fourth proportional to 8,679.40, 13,022.88 and 4,294.36 is: 6,443.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.40 : 13,022.88 = 4,294.36 : x
  2. Step 2: Convert to fraction form
    8,679.40/13,022.88 = 4,294.36/x
  3. Step 3: Cross multiply
    8,679.40x = 13,022.88 × 4,294.36
  4. Step 4: Simplify right side
    8,679.40x = 55,924,934.96
  5. Step 5: Solve for x
    x = 55,924,934.96/8,679.40
  6. Step 6: Final answer
    x = 6,443.41

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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.