Home / 1,515.94-2,091.25-1,316.51

Finding the Fourth Proportional to 1,515.94, 2,091.25 and 1,316.51

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Solution

The fourth proportional to 1,515.94, 2,091.25 and 1,316.51 is: 1,816.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.94 : 2,091.25 = 1,316.51 : x
  2. Step 2: Convert to fraction form
    1,515.94/2,091.25 = 1,316.51/x
  3. Step 3: Cross multiply
    1,515.94x = 2,091.25 × 1,316.51
  4. Step 4: Simplify right side
    1,515.94x = 2,753,151.54
  5. Step 5: Solve for x
    x = 2,753,151.54/1,515.94
  6. Step 6: Final answer
    x = 1,816.13

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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.