Home / 1,572.42-2,170.26-1,076.43

Finding the Fourth Proportional to 1,572.42, 2,170.26 and 1,076.43

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Solution

The fourth proportional to 1,572.42, 2,170.26 and 1,076.43 is: 1,485.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.42 : 2,170.26 = 1,076.43 : x
  2. Step 2: Convert to fraction form
    1,572.42/2,170.26 = 1,076.43/x
  3. Step 3: Cross multiply
    1,572.42x = 2,170.26 × 1,076.43
  4. Step 4: Simplify right side
    1,572.42x = 2,336,132.97
  5. Step 5: Solve for x
    x = 2,336,132.97/1,572.42
  6. Step 6: Final answer
    x = 1,485.69

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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.