Home / 2,291.15-3,437.70-1,122.20

Finding the Fourth Proportional to 2,291.15, 3,437.70 and 1,122.20

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Solution

The fourth proportional to 2,291.15, 3,437.70 and 1,122.20 is: 1,683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.15 : 3,437.70 = 1,122.20 : x
  2. Step 2: Convert to fraction form
    2,291.15/3,437.70 = 1,122.20/x
  3. Step 3: Cross multiply
    2,291.15x = 3,437.70 × 1,122.20
  4. Step 4: Simplify right side
    2,291.15x = 3,857,786.94
  5. Step 5: Solve for x
    x = 3,857,786.94/2,291.15
  6. Step 6: Final answer
    x = 1,683.78

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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.