Home / 2,195.92-3,030.30-1,311.52

Finding the Fourth Proportional to 2,195.92, 3,030.30 and 1,311.52

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Solution

The fourth proportional to 2,195.92, 3,030.30 and 1,311.52 is: 1,809.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.92 : 3,030.30 = 1,311.52 : x
  2. Step 2: Convert to fraction form
    2,195.92/3,030.30 = 1,311.52/x
  3. Step 3: Cross multiply
    2,195.92x = 3,030.30 × 1,311.52
  4. Step 4: Simplify right side
    2,195.92x = 3,974,299.06
  5. Step 5: Solve for x
    x = 3,974,299.06/2,195.92
  6. Step 6: Final answer
    x = 1,809.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.