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Finding the Fourth Proportional to 2,020.86, 3,031.29 and 559.97

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Solution

The fourth proportional to 2,020.86, 3,031.29 and 559.97 is: 839.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.86 : 3,031.29 = 559.97 : x
  2. Step 2: Convert to fraction form
    2,020.86/3,031.29 = 559.97/x
  3. Step 3: Cross multiply
    2,020.86x = 3,031.29 × 559.97
  4. Step 4: Simplify right side
    2,020.86x = 1,697,431.46
  5. Step 5: Solve for x
    x = 1,697,431.46/2,020.86
  6. Step 6: Final answer
    x = 839.96

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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.