Home / 2,571.15-3,548.15-1,392.21

Finding the Fourth Proportional to 2,571.15, 3,548.15 and 1,392.21

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Solution

The fourth proportional to 2,571.15, 3,548.15 and 1,392.21 is: 1,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.15 : 3,548.15 = 1,392.21 : x
  2. Step 2: Convert to fraction form
    2,571.15/3,548.15 = 1,392.21/x
  3. Step 3: Cross multiply
    2,571.15x = 3,548.15 × 1,392.21
  4. Step 4: Simplify right side
    2,571.15x = 4,939,762.95
  5. Step 5: Solve for x
    x = 4,939,762.95/2,571.15
  6. Step 6: Final answer
    x = 1,921.23

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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.