Home / 2,122.82-2,929.22-1,178.48

Finding the Fourth Proportional to 2,122.82, 2,929.22 and 1,178.48

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Solution

The fourth proportional to 2,122.82, 2,929.22 and 1,178.48 is: 1,626.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.82 : 2,929.22 = 1,178.48 : x
  2. Step 2: Convert to fraction form
    2,122.82/2,929.22 = 1,178.48/x
  3. Step 3: Cross multiply
    2,122.82x = 2,929.22 × 1,178.48
  4. Step 4: Simplify right side
    2,122.82x = 3,452,027.19
  5. Step 5: Solve for x
    x = 3,452,027.19/2,122.82
  6. Step 6: Final answer
    x = 1,626.15

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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.