Home / 8,239.86-12,366.95-3,312.90

Finding the Fourth Proportional to 8,239.86, 12,366.95 and 3,312.90

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Solution

The fourth proportional to 8,239.86, 12,366.95 and 3,312.90 is: 4,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.86 : 12,366.95 = 3,312.90 : x
  2. Step 2: Convert to fraction form
    8,239.86/12,366.95 = 3,312.90/x
  3. Step 3: Cross multiply
    8,239.86x = 12,366.95 × 3,312.90
  4. Step 4: Simplify right side
    8,239.86x = 40,970,452.09
  5. Step 5: Solve for x
    x = 40,970,452.09/8,239.86
  6. Step 6: Final answer
    x = 4,972.23

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1.5x scale

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.