Home / 2,571.80-3,549.07-1,392.86

Finding the Fourth Proportional to 2,571.80, 3,549.07 and 1,392.86

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Solution

The fourth proportional to 2,571.80, 3,549.07 and 1,392.86 is: 1,922.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.80 : 3,549.07 = 1,392.86 : x
  2. Step 2: Convert to fraction form
    2,571.80/3,549.07 = 1,392.86/x
  3. Step 3: Cross multiply
    2,571.80x = 3,549.07 × 1,392.86
  4. Step 4: Simplify right side
    2,571.80x = 4,943,368.25
  5. Step 5: Solve for x
    x = 4,943,368.25/2,571.80
  6. Step 6: Final answer
    x = 1,922.15

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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.