Home / 2,139.45-2,951.91-1,195.26

Finding the Fourth Proportional to 2,139.45, 2,951.91 and 1,195.26

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Solution

The fourth proportional to 2,139.45, 2,951.91 and 1,195.26 is: 1,649.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.45 : 2,951.91 = 1,195.26 : x
  2. Step 2: Convert to fraction form
    2,139.45/2,951.91 = 1,195.26/x
  3. Step 3: Cross multiply
    2,139.45x = 2,951.91 × 1,195.26
  4. Step 4: Simplify right side
    2,139.45x = 3,528,299.95
  5. Step 5: Solve for x
    x = 3,528,299.95/2,139.45
  6. Step 6: Final answer
    x = 1,649.16

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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.