Home / 1,515.62-2,269.59-865.22

Finding the Fourth Proportional to 1,515.62, 2,269.59 and 865.22

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Solution

The fourth proportional to 1,515.62, 2,269.59 and 865.22 is: 1,295.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.62 : 2,269.59 = 865.22 : x
  2. Step 2: Convert to fraction form
    1,515.62/2,269.59 = 865.22/x
  3. Step 3: Cross multiply
    1,515.62x = 2,269.59 × 865.22
  4. Step 4: Simplify right side
    1,515.62x = 1,963,694.66
  5. Step 5: Solve for x
    x = 1,963,694.66/1,515.62
  6. Step 6: Final answer
    x = 1,295.64

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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.