Home / 7,105.30-10,657.94-1,911.18

Finding the Fourth Proportional to 7,105.30, 10,657.94 and 1,911.18

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Solution

The fourth proportional to 7,105.30, 10,657.94 and 1,911.18 is: 2,866.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.30 : 10,657.94 = 1,911.18 : x
  2. Step 2: Convert to fraction form
    7,105.30/10,657.94 = 1,911.18/x
  3. Step 3: Cross multiply
    7,105.30x = 10,657.94 × 1,911.18
  4. Step 4: Simplify right side
    7,105.30x = 20,369,241.77
  5. Step 5: Solve for x
    x = 20,369,241.77/7,105.30
  6. Step 6: Final answer
    x = 2,866.77

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Similar ratio
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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.