Home / 8,278.50-12,417.78-7,863.24

Finding the Fourth Proportional to 8,278.50, 12,417.78 and 7,863.24

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Solution

The fourth proportional to 8,278.50, 12,417.78 and 7,863.24 is: 11,794.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.50 : 12,417.78 = 7,863.24 : x
  2. Step 2: Convert to fraction form
    8,278.50/12,417.78 = 7,863.24/x
  3. Step 3: Cross multiply
    8,278.50x = 12,417.78 × 7,863.24
  4. Step 4: Simplify right side
    8,278.50x = 97,643,984.41
  5. Step 5: Solve for x
    x = 97,643,984.41/8,278.50
  6. Step 6: Final answer
    x = 11,794.89

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Double scale
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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.