Home / 8,156.40-12,230.74-3,161.12

Finding the Fourth Proportional to 8,156.40, 12,230.74 and 3,161.12

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Solution

The fourth proportional to 8,156.40, 12,230.74 and 3,161.12 is: 4,740.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.40 : 12,230.74 = 3,161.12 : x
  2. Step 2: Convert to fraction form
    8,156.40/12,230.74 = 3,161.12/x
  3. Step 3: Cross multiply
    8,156.40x = 12,230.74 × 3,161.12
  4. Step 4: Simplify right side
    8,156.40x = 38,662,836.83
  5. Step 5: Solve for x
    x = 38,662,836.83/8,156.40
  6. Step 6: Final answer
    x = 4,740.18

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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.