Home / 8,657.11-12,974.62-4,215.84

Finding the Fourth Proportional to 8,657.11, 12,974.62 and 4,215.84

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Solution

The fourth proportional to 8,657.11, 12,974.62 and 4,215.84 is: 6,318.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.11 : 12,974.62 = 4,215.84 : x
  2. Step 2: Convert to fraction form
    8,657.11/12,974.62 = 4,215.84/x
  3. Step 3: Cross multiply
    8,657.11x = 12,974.62 × 4,215.84
  4. Step 4: Simplify right side
    8,657.11x = 54,698,921.98
  5. Step 5: Solve for x
    x = 54,698,921.98/8,657.11
  6. Step 6: Final answer
    x = 6,318.38

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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.