Home / 2,571.14-3,548.18-1,392.21

Finding the Fourth Proportional to 2,571.14, 3,548.18 and 1,392.21

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Solution

The fourth proportional to 2,571.14, 3,548.18 and 1,392.21 is: 1,921.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.14 : 3,548.18 = 1,392.21 : x
  2. Step 2: Convert to fraction form
    2,571.14/3,548.18 = 1,392.21/x
  3. Step 3: Cross multiply
    2,571.14x = 3,548.18 × 1,392.21
  4. Step 4: Simplify right side
    2,571.14x = 4,939,804.72
  5. Step 5: Solve for x
    x = 4,939,804.72/2,571.14
  6. Step 6: Final answer
    x = 1,921.25

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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.