Home / 1,639.26-2,262.42-976.50

Finding the Fourth Proportional to 1,639.26, 2,262.42 and 976.50

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Solution

The fourth proportional to 1,639.26, 2,262.42 and 976.50 is: 1,347.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.26 : 2,262.42 = 976.50 : x
  2. Step 2: Convert to fraction form
    1,639.26/2,262.42 = 976.50/x
  3. Step 3: Cross multiply
    1,639.26x = 2,262.42 × 976.50
  4. Step 4: Simplify right side
    1,639.26x = 2,209,253.13
  5. Step 5: Solve for x
    x = 2,209,253.13/1,639.26
  6. Step 6: Final answer
    x = 1,347.71

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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.