Home / 2,253.93-3,112.55-2,131.21

Finding the Fourth Proportional to 2,253.93, 3,112.55 and 2,131.21

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Solution

The fourth proportional to 2,253.93, 3,112.55 and 2,131.21 is: 2,943.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.93 : 3,112.55 = 2,131.21 : x
  2. Step 2: Convert to fraction form
    2,253.93/3,112.55 = 2,131.21/x
  3. Step 3: Cross multiply
    2,253.93x = 3,112.55 × 2,131.21
  4. Step 4: Simplify right side
    2,253.93x = 6,633,487.03
  5. Step 5: Solve for x
    x = 6,633,487.03/2,253.93
  6. Step 6: Final answer
    x = 2,943.08

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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.