Home / 1,571.38-2,167.28-1,099.12

Finding the Fourth Proportional to 1,571.38, 2,167.28 and 1,099.12

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Solution

The fourth proportional to 1,571.38, 2,167.28 and 1,099.12 is: 1,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.38 : 2,167.28 = 1,099.12 : x
  2. Step 2: Convert to fraction form
    1,571.38/2,167.28 = 1,099.12/x
  3. Step 3: Cross multiply
    1,571.38x = 2,167.28 × 1,099.12
  4. Step 4: Simplify right side
    1,571.38x = 2,382,100.79
  5. Step 5: Solve for x
    x = 2,382,100.79/1,571.38
  6. Step 6: Final answer
    x = 1,515.93

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1.5x scale

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.