Home / 2,170.41-3,252.89-1,129.80

Finding the Fourth Proportional to 2,170.41, 3,252.89 and 1,129.80

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Solution

The fourth proportional to 2,170.41, 3,252.89 and 1,129.80 is: 1,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.41 : 3,252.89 = 1,129.80 : x
  2. Step 2: Convert to fraction form
    2,170.41/3,252.89 = 1,129.80/x
  3. Step 3: Cross multiply
    2,170.41x = 3,252.89 × 1,129.80
  4. Step 4: Simplify right side
    2,170.41x = 3,675,111.85
  5. Step 5: Solve for x
    x = 3,675,111.85/2,170.41
  6. Step 6: Final answer
    x = 1,693.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.