Home / 2,122.90-2,929.46-1,178.82

Finding the Fourth Proportional to 2,122.90, 2,929.46 and 1,178.82

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Solution

The fourth proportional to 2,122.90, 2,929.46 and 1,178.82 is: 1,626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.90 : 2,929.46 = 1,178.82 : x
  2. Step 2: Convert to fraction form
    2,122.90/2,929.46 = 1,178.82/x
  3. Step 3: Cross multiply
    2,122.90x = 2,929.46 × 1,178.82
  4. Step 4: Simplify right side
    2,122.90x = 3,453,306.04
  5. Step 5: Solve for x
    x = 3,453,306.04/2,122.90
  6. Step 6: Final answer
    x = 1,626.69

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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.