Home / 8,116.95-12,170.73-3,180.81

Finding the Fourth Proportional to 8,116.95, 12,170.73 and 3,180.81

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Solution

The fourth proportional to 8,116.95, 12,170.73 and 3,180.81 is: 4,769.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.95 : 12,170.73 = 3,180.81 : x
  2. Step 2: Convert to fraction form
    8,116.95/12,170.73 = 3,180.81/x
  3. Step 3: Cross multiply
    8,116.95x = 12,170.73 × 3,180.81
  4. Step 4: Simplify right side
    8,116.95x = 38,712,779.69
  5. Step 5: Solve for x
    x = 38,712,779.69/8,116.95
  6. Step 6: Final answer
    x = 4,769.38

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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.