Home / 1,509.26-2,262.06-815.49

Finding the Fourth Proportional to 1,509.26, 2,262.06 and 815.49

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Solution

The fourth proportional to 1,509.26, 2,262.06 and 815.49 is: 1,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.26 : 2,262.06 = 815.49 : x
  2. Step 2: Convert to fraction form
    1,509.26/2,262.06 = 815.49/x
  3. Step 3: Cross multiply
    1,509.26x = 2,262.06 × 815.49
  4. Step 4: Simplify right side
    1,509.26x = 1,844,687.31
  5. Step 5: Solve for x
    x = 1,844,687.31/1,509.26
  6. Step 6: Final answer
    x = 1,222.25

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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.