Home / 2,256.07-3,112.68-1,261.21

Finding the Fourth Proportional to 2,256.07, 3,112.68 and 1,261.21

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Solution

The fourth proportional to 2,256.07, 3,112.68 and 1,261.21 is: 1,740.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.07 : 3,112.68 = 1,261.21 : x
  2. Step 2: Convert to fraction form
    2,256.07/3,112.68 = 1,261.21/x
  3. Step 3: Cross multiply
    2,256.07x = 3,112.68 × 1,261.21
  4. Step 4: Simplify right side
    2,256.07x = 3,925,743.14
  5. Step 5: Solve for x
    x = 3,925,743.14/2,256.07
  6. Step 6: Final answer
    x = 1,740.08

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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.