Home / 1,644.74-2,269.86-981.62

Finding the Fourth Proportional to 1,644.74, 2,269.86 and 981.62

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Solution

The fourth proportional to 1,644.74, 2,269.86 and 981.62 is: 1,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.74 : 2,269.86 = 981.62 : x
  2. Step 2: Convert to fraction form
    1,644.74/2,269.86 = 981.62/x
  3. Step 3: Cross multiply
    1,644.74x = 2,269.86 × 981.62
  4. Step 4: Simplify right side
    1,644.74x = 2,228,139.97
  5. Step 5: Solve for x
    x = 2,228,139.97/1,644.74
  6. Step 6: Final answer
    x = 1,354.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.