Home / 2,247.40-3,111.78-2,189.80

Finding the Fourth Proportional to 2,247.40, 3,111.78 and 2,189.80

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Solution

The fourth proportional to 2,247.40, 3,111.78 and 2,189.80 is: 3,032.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.40 : 3,111.78 = 2,189.80 : x
  2. Step 2: Convert to fraction form
    2,247.40/3,111.78 = 2,189.80/x
  3. Step 3: Cross multiply
    2,247.40x = 3,111.78 × 2,189.80
  4. Step 4: Simplify right side
    2,247.40x = 6,814,175.84
  5. Step 5: Solve for x
    x = 6,814,175.84/2,247.40
  6. Step 6: Final answer
    x = 3,032.03

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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.