Home / 8,239.50-12,360.80-3,309.53

Finding the Fourth Proportional to 8,239.50, 12,360.80 and 3,309.53

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Solution

The fourth proportional to 8,239.50, 12,360.80 and 3,309.53 is: 4,964.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.50 : 12,360.80 = 3,309.53 : x
  2. Step 2: Convert to fraction form
    8,239.50/12,360.80 = 3,309.53/x
  3. Step 3: Cross multiply
    8,239.50x = 12,360.80 × 3,309.53
  4. Step 4: Simplify right side
    8,239.50x = 40,908,384.89
  5. Step 5: Solve for x
    x = 40,908,384.89/8,239.50
  6. Step 6: Final answer
    x = 4,964.91

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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.