Home / 1,575.38-2,174.03-867.20

Finding the Fourth Proportional to 1,575.38, 2,174.03 and 867.20

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Solution

The fourth proportional to 1,575.38, 2,174.03 and 867.20 is: 1,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.38 : 2,174.03 = 867.20 : x
  2. Step 2: Convert to fraction form
    1,575.38/2,174.03 = 867.20/x
  3. Step 3: Cross multiply
    1,575.38x = 2,174.03 × 867.20
  4. Step 4: Simplify right side
    1,575.38x = 1,885,326.42
  5. Step 5: Solve for x
    x = 1,885,326.42/1,575.38
  6. Step 6: Final answer
    x = 1,196.74

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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.