Home / 1,571.14-2,167.81-1,011.80

Finding the Fourth Proportional to 1,571.14, 2,167.81 and 1,011.80

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Solution

The fourth proportional to 1,571.14, 2,167.81 and 1,011.80 is: 1,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.14 : 2,167.81 = 1,011.80 : x
  2. Step 2: Convert to fraction form
    1,571.14/2,167.81 = 1,011.80/x
  3. Step 3: Cross multiply
    1,571.14x = 2,167.81 × 1,011.80
  4. Step 4: Simplify right side
    1,571.14x = 2,193,376.79
  5. Step 5: Solve for x
    x = 2,193,376.79/1,571.14
  6. Step 6: Final answer
    x = 1,396.04

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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.