Home / 7,878.32-11,819.85-3,197.46

Finding the Fourth Proportional to 7,878.32, 11,819.85 and 3,197.46

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Solution

The fourth proportional to 7,878.32, 11,819.85 and 3,197.46 is: 4,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.32 : 11,819.85 = 3,197.46 : x
  2. Step 2: Convert to fraction form
    7,878.32/11,819.85 = 3,197.46/x
  3. Step 3: Cross multiply
    7,878.32x = 11,819.85 × 3,197.46
  4. Step 4: Simplify right side
    7,878.32x = 37,793,497.58
  5. Step 5: Solve for x
    x = 37,793,497.58/7,878.32
  6. Step 6: Final answer
    x = 4,797.15

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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.