Home / 1,641.29-2,461-1,121.93

Finding the Fourth Proportional to 1,641.29, 2,461 and 1,121.93

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Solution

The fourth proportional to 1,641.29, 2,461 and 1,121.93 is: 1,682.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.29 : 2,461 = 1,121.93 : x
  2. Step 2: Convert to fraction form
    1,641.29/2,461 = 1,121.93/x
  3. Step 3: Cross multiply
    1,641.29x = 2,461 × 1,121.93
  4. Step 4: Simplify right side
    1,641.29x = 2,761,069.73
  5. Step 5: Solve for x
    x = 2,761,069.73/1,641.29
  6. Step 6: Final answer
    x = 1,682.26

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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.