Home / 2,620.76-3,929.31-1,159.11

Finding the Fourth Proportional to 2,620.76, 3,929.31 and 1,159.11

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Solution

The fourth proportional to 2,620.76, 3,929.31 and 1,159.11 is: 1,737.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.76 : 3,929.31 = 1,159.11 : x
  2. Step 2: Convert to fraction form
    2,620.76/3,929.31 = 1,159.11/x
  3. Step 3: Cross multiply
    2,620.76x = 3,929.31 × 1,159.11
  4. Step 4: Simplify right side
    2,620.76x = 4,554,502.51
  5. Step 5: Solve for x
    x = 4,554,502.51/2,620.76
  6. Step 6: Final answer
    x = 1,737.86

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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.