Home / 8,782.31-13,178.66-3,239.55

Finding the Fourth Proportional to 8,782.31, 13,178.66 and 3,239.55

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Solution

The fourth proportional to 8,782.31, 13,178.66 and 3,239.55 is: 4,861.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.31 : 13,178.66 = 3,239.55 : x
  2. Step 2: Convert to fraction form
    8,782.31/13,178.66 = 3,239.55/x
  3. Step 3: Cross multiply
    8,782.31x = 13,178.66 × 3,239.55
  4. Step 4: Simplify right side
    8,782.31x = 42,692,845.91
  5. Step 5: Solve for x
    x = 42,692,845.91/8,782.31
  6. Step 6: Final answer
    x = 4,861.23

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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.