Home / 2,195.71-3,030.11-1,238.69

Finding the Fourth Proportional to 2,195.71, 3,030.11 and 1,238.69

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Solution

The fourth proportional to 2,195.71, 3,030.11 and 1,238.69 is: 1,709.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.71 : 3,030.11 = 1,238.69 : x
  2. Step 2: Convert to fraction form
    2,195.71/3,030.11 = 1,238.69/x
  3. Step 3: Cross multiply
    2,195.71x = 3,030.11 × 1,238.69
  4. Step 4: Simplify right side
    2,195.71x = 3,753,372.98
  5. Step 5: Solve for x
    x = 3,753,372.98/2,195.71
  6. Step 6: Final answer
    x = 1,709.41

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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.