Home / 1,572.88-2,170.60-1,013.56

Finding the Fourth Proportional to 1,572.88, 2,170.60 and 1,013.56

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Solution

The fourth proportional to 1,572.88, 2,170.60 and 1,013.56 is: 1,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.88 : 2,170.60 = 1,013.56 : x
  2. Step 2: Convert to fraction form
    1,572.88/2,170.60 = 1,013.56/x
  3. Step 3: Cross multiply
    1,572.88x = 2,170.60 × 1,013.56
  4. Step 4: Simplify right side
    1,572.88x = 2,200,033.34
  5. Step 5: Solve for x
    x = 2,200,033.34/1,572.88
  6. Step 6: Final answer
    x = 1,398.73

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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.