Home / 1,402.75-2,102.70-581.47

Finding the Fourth Proportional to 1,402.75, 2,102.70 and 581.47

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Solution

The fourth proportional to 1,402.75, 2,102.70 and 581.47 is: 871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.75 : 2,102.70 = 581.47 : x
  2. Step 2: Convert to fraction form
    1,402.75/2,102.70 = 581.47/x
  3. Step 3: Cross multiply
    1,402.75x = 2,102.70 × 581.47
  4. Step 4: Simplify right side
    1,402.75x = 1,222,656.97
  5. Step 5: Solve for x
    x = 1,222,656.97/1,402.75
  6. Step 6: Final answer
    x = 871.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.