Home / 7,105.12-10,657.68-3,406.56

Finding the Fourth Proportional to 7,105.12, 10,657.68 and 3,406.56

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Solution

The fourth proportional to 7,105.12, 10,657.68 and 3,406.56 is: 5,109.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.12 : 10,657.68 = 3,406.56 : x
  2. Step 2: Convert to fraction form
    7,105.12/10,657.68 = 3,406.56/x
  3. Step 3: Cross multiply
    7,105.12x = 10,657.68 × 3,406.56
  4. Step 4: Simplify right side
    7,105.12x = 36,306,026.38
  5. Step 5: Solve for x
    x = 36,306,026.38/7,105.12
  6. Step 6: Final answer
    x = 5,109.84

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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.