Home / 1,479.09-2,041.13-815.97

Finding the Fourth Proportional to 1,479.09, 2,041.13 and 815.97

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Solution

The fourth proportional to 1,479.09, 2,041.13 and 815.97 is: 1,126.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.09 : 2,041.13 = 815.97 : x
  2. Step 2: Convert to fraction form
    1,479.09/2,041.13 = 815.97/x
  3. Step 3: Cross multiply
    1,479.09x = 2,041.13 × 815.97
  4. Step 4: Simplify right side
    1,479.09x = 1,665,496.77
  5. Step 5: Solve for x
    x = 1,665,496.77/1,479.09
  6. Step 6: Final answer
    x = 1,126.03

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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.