Home / 2,175.60-3,002.34-1,180.90

Finding the Fourth Proportional to 2,175.60, 3,002.34 and 1,180.90

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Solution

The fourth proportional to 2,175.60, 3,002.34 and 1,180.90 is: 1,629.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.60 : 3,002.34 = 1,180.90 : x
  2. Step 2: Convert to fraction form
    2,175.60/3,002.34 = 1,180.90/x
  3. Step 3: Cross multiply
    2,175.60x = 3,002.34 × 1,180.90
  4. Step 4: Simplify right side
    2,175.60x = 3,545,463.31
  5. Step 5: Solve for x
    x = 3,545,463.31/2,175.60
  6. Step 6: Final answer
    x = 1,629.65

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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.