Home / 2,122.75-2,929.35-1,178.54

Finding the Fourth Proportional to 2,122.75, 2,929.35 and 1,178.54

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Solution

The fourth proportional to 2,122.75, 2,929.35 and 1,178.54 is: 1,626.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.75 : 2,929.35 = 1,178.54 : x
  2. Step 2: Convert to fraction form
    2,122.75/2,929.35 = 1,178.54/x
  3. Step 3: Cross multiply
    2,122.75x = 2,929.35 × 1,178.54
  4. Step 4: Simplify right side
    2,122.75x = 3,452,356.15
  5. Step 5: Solve for x
    x = 3,452,356.15/2,122.75
  6. Step 6: Final answer
    x = 1,626.36

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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.