Home / 1,639.19-2,262.05-976.03

Finding the Fourth Proportional to 1,639.19, 2,262.05 and 976.03

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Solution

The fourth proportional to 1,639.19, 2,262.05 and 976.03 is: 1,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.19 : 2,262.05 = 976.03 : x
  2. Step 2: Convert to fraction form
    1,639.19/2,262.05 = 976.03/x
  3. Step 3: Cross multiply
    1,639.19x = 2,262.05 × 976.03
  4. Step 4: Simplify right side
    1,639.19x = 2,207,828.66
  5. Step 5: Solve for x
    x = 2,207,828.66/1,639.19
  6. Step 6: Final answer
    x = 1,346.90

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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.