Home / 8,540.40-12,810.06-3,860.76

Finding the Fourth Proportional to 8,540.40, 12,810.06 and 3,860.76

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Solution

The fourth proportional to 8,540.40, 12,810.06 and 3,860.76 is: 5,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.40 : 12,810.06 = 3,860.76 : x
  2. Step 2: Convert to fraction form
    8,540.40/12,810.06 = 3,860.76/x
  3. Step 3: Cross multiply
    8,540.40x = 12,810.06 × 3,860.76
  4. Step 4: Simplify right side
    8,540.40x = 49,456,567.25
  5. Step 5: Solve for x
    x = 49,456,567.25/8,540.40
  6. Step 6: Final answer
    x = 5,790.90

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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.