Home / 1,575.42-2,174.09-867.25

Finding the Fourth Proportional to 1,575.42, 2,174.09 and 867.25

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Solution

The fourth proportional to 1,575.42, 2,174.09 and 867.25 is: 1,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.42 : 2,174.09 = 867.25 : x
  2. Step 2: Convert to fraction form
    1,575.42/2,174.09 = 867.25/x
  3. Step 3: Cross multiply
    1,575.42x = 2,174.09 × 867.25
  4. Step 4: Simplify right side
    1,575.42x = 1,885,469.78
  5. Step 5: Solve for x
    x = 1,885,469.78/1,575.42
  6. Step 6: Final answer
    x = 1,196.80

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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.