Home / 1,865.97-2,792.55-1,315.56

Finding the Fourth Proportional to 1,865.97, 2,792.55 and 1,315.56

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Solution

The fourth proportional to 1,865.97, 2,792.55 and 1,315.56 is: 1,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.97 : 2,792.55 = 1,315.56 : x
  2. Step 2: Convert to fraction form
    1,865.97/2,792.55 = 1,315.56/x
  3. Step 3: Cross multiply
    1,865.97x = 2,792.55 × 1,315.56
  4. Step 4: Simplify right side
    1,865.97x = 3,673,767.08
  5. Step 5: Solve for x
    x = 3,673,767.08/1,865.97
  6. Step 6: Final answer
    x = 1,968.82

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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.