Home / 8,451.45-12,679.88-3,521.61

Finding the Fourth Proportional to 8,451.45, 12,679.88 and 3,521.61

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Solution

The fourth proportional to 8,451.45, 12,679.88 and 3,521.61 is: 5,283.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.45 : 12,679.88 = 3,521.61 : x
  2. Step 2: Convert to fraction form
    8,451.45/12,679.88 = 3,521.61/x
  3. Step 3: Cross multiply
    8,451.45x = 12,679.88 × 3,521.61
  4. Step 4: Simplify right side
    8,451.45x = 44,653,574.60
  5. Step 5: Solve for x
    x = 44,653,574.60/8,451.45
  6. Step 6: Final answer
    x = 5,283.54

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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.