Home / 1,299.19-1,949.78-1,042.30

Finding the Fourth Proportional to 1,299.19, 1,949.78 and 1,042.30

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Solution

The fourth proportional to 1,299.19, 1,949.78 and 1,042.30 is: 1,564.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.19 : 1,949.78 = 1,042.30 : x
  2. Step 2: Convert to fraction form
    1,299.19/1,949.78 = 1,042.30/x
  3. Step 3: Cross multiply
    1,299.19x = 1,949.78 × 1,042.30
  4. Step 4: Simplify right side
    1,299.19x = 2,032,255.69
  5. Step 5: Solve for x
    x = 2,032,255.69/1,299.19
  6. Step 6: Final answer
    x = 1,564.25

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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.