Home / 7,875.66-11,817.15-3,198.89

Finding the Fourth Proportional to 7,875.66, 11,817.15 and 3,198.89

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Solution

The fourth proportional to 7,875.66, 11,817.15 and 3,198.89 is: 4,799.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.66 : 11,817.15 = 3,198.89 : x
  2. Step 2: Convert to fraction form
    7,875.66/11,817.15 = 3,198.89/x
  3. Step 3: Cross multiply
    7,875.66x = 11,817.15 × 3,198.89
  4. Step 4: Simplify right side
    7,875.66x = 37,801,762.96
  5. Step 5: Solve for x
    x = 37,801,762.96/7,875.66
  6. Step 6: Final answer
    x = 4,799.82

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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.