Home / 8,424.76-12,639.30-3,231.04

Finding the Fourth Proportional to 8,424.76, 12,639.30 and 3,231.04

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Solution

The fourth proportional to 8,424.76, 12,639.30 and 3,231.04 is: 4,847.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.76 : 12,639.30 = 3,231.04 : x
  2. Step 2: Convert to fraction form
    8,424.76/12,639.30 = 3,231.04/x
  3. Step 3: Cross multiply
    8,424.76x = 12,639.30 × 3,231.04
  4. Step 4: Simplify right side
    8,424.76x = 40,838,083.87
  5. Step 5: Solve for x
    x = 40,838,083.87/8,424.76
  6. Step 6: Final answer
    x = 4,847.39

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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.