Home / 1,575.18-2,174.58-985.92

Finding the Fourth Proportional to 1,575.18, 2,174.58 and 985.92

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Solution

The fourth proportional to 1,575.18, 2,174.58 and 985.92 is: 1,361.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.18 : 2,174.58 = 985.92 : x
  2. Step 2: Convert to fraction form
    1,575.18/2,174.58 = 985.92/x
  3. Step 3: Cross multiply
    1,575.18x = 2,174.58 × 985.92
  4. Step 4: Simplify right side
    1,575.18x = 2,143,961.91
  5. Step 5: Solve for x
    x = 2,143,961.91/1,575.18
  6. Step 6: Final answer
    x = 1,361.09

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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.