Home / 7,866.45-11,799.70-3,186.55

Finding the Fourth Proportional to 7,866.45, 11,799.70 and 3,186.55

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Solution

The fourth proportional to 7,866.45, 11,799.70 and 3,186.55 is: 4,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.45 : 11,799.70 = 3,186.55 : x
  2. Step 2: Convert to fraction form
    7,866.45/11,799.70 = 3,186.55/x
  3. Step 3: Cross multiply
    7,866.45x = 11,799.70 × 3,186.55
  4. Step 4: Simplify right side
    7,866.45x = 37,600,301.79
  5. Step 5: Solve for x
    x = 37,600,301.79/7,866.45
  6. Step 6: Final answer
    x = 4,779.83

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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.