Home / 8,109.84-12,165.45-2,561.70

Finding the Fourth Proportional to 8,109.84, 12,165.45 and 2,561.70

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Solution

The fourth proportional to 8,109.84, 12,165.45 and 2,561.70 is: 3,842.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.84 : 12,165.45 = 2,561.70 : x
  2. Step 2: Convert to fraction form
    8,109.84/12,165.45 = 2,561.70/x
  3. Step 3: Cross multiply
    8,109.84x = 12,165.45 × 2,561.70
  4. Step 4: Simplify right side
    8,109.84x = 31,164,233.27
  5. Step 5: Solve for x
    x = 31,164,233.27/8,109.84
  6. Step 6: Final answer
    x = 3,842.77

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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.