Home / 8,258.32-12,385.93-3,815.80

Finding the Fourth Proportional to 8,258.32, 12,385.93 and 3,815.80

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Solution

The fourth proportional to 8,258.32, 12,385.93 and 3,815.80 is: 5,722.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.32 : 12,385.93 = 3,815.80 : x
  2. Step 2: Convert to fraction form
    8,258.32/12,385.93 = 3,815.80/x
  3. Step 3: Cross multiply
    8,258.32x = 12,385.93 × 3,815.80
  4. Step 4: Simplify right side
    8,258.32x = 47,262,251.95
  5. Step 5: Solve for x
    x = 47,262,251.95/8,258.32
  6. Step 6: Final answer
    x = 5,722.99

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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.