Home / 2,572.12-3,549.55-1,393.21

Finding the Fourth Proportional to 2,572.12, 3,549.55 and 1,393.21

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Solution

The fourth proportional to 2,572.12, 3,549.55 and 1,393.21 is: 1,922.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.12 : 3,549.55 = 1,393.21 : x
  2. Step 2: Convert to fraction form
    2,572.12/3,549.55 = 1,393.21/x
  3. Step 3: Cross multiply
    2,572.12x = 3,549.55 × 1,393.21
  4. Step 4: Simplify right side
    2,572.12x = 4,945,268.56
  5. Step 5: Solve for x
    x = 4,945,268.56/2,572.12
  6. Step 6: Final answer
    x = 1,922.64

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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.