Home / 2,020.86-3,032.28-1,291.86

Finding the Fourth Proportional to 2,020.86, 3,032.28 and 1,291.86

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Solution

The fourth proportional to 2,020.86, 3,032.28 and 1,291.86 is: 1,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.86 : 3,032.28 = 1,291.86 : x
  2. Step 2: Convert to fraction form
    2,020.86/3,032.28 = 1,291.86/x
  3. Step 3: Cross multiply
    2,020.86x = 3,032.28 × 1,291.86
  4. Step 4: Simplify right side
    2,020.86x = 3,917,281.24
  5. Step 5: Solve for x
    x = 3,917,281.24/2,020.86
  6. Step 6: Final answer
    x = 1,938.42

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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.