Home / 1,575.12-2,168.82-1,377.48

Finding the Fourth Proportional to 1,575.12, 2,168.82 and 1,377.48

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Solution

The fourth proportional to 1,575.12, 2,168.82 and 1,377.48 is: 1,896.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.12 : 2,168.82 = 1,377.48 : x
  2. Step 2: Convert to fraction form
    1,575.12/2,168.82 = 1,377.48/x
  3. Step 3: Cross multiply
    1,575.12x = 2,168.82 × 1,377.48
  4. Step 4: Simplify right side
    1,575.12x = 2,987,506.17
  5. Step 5: Solve for x
    x = 2,987,506.17/1,575.12
  6. Step 6: Final answer
    x = 1,896.68

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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.