Home / 7,107.30-10,660.94-1,913.18

Finding the Fourth Proportional to 7,107.30, 10,660.94 and 1,913.18

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Solution

The fourth proportional to 7,107.30, 10,660.94 and 1,913.18 is: 2,869.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.30 : 10,660.94 = 1,913.18 : x
  2. Step 2: Convert to fraction form
    7,107.30/10,660.94 = 1,913.18/x
  3. Step 3: Cross multiply
    7,107.30x = 10,660.94 × 1,913.18
  4. Step 4: Simplify right side
    7,107.30x = 20,396,297.19
  5. Step 5: Solve for x
    x = 20,396,297.19/7,107.30
  6. Step 6: Final answer
    x = 2,869.77

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Double scale
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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.