Home / 2,256.13-3,113.52-1,261.51

Finding the Fourth Proportional to 2,256.13, 3,113.52 and 1,261.51

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Solution

The fourth proportional to 2,256.13, 3,113.52 and 1,261.51 is: 1,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.13 : 3,113.52 = 1,261.51 : x
  2. Step 2: Convert to fraction form
    2,256.13/3,113.52 = 1,261.51/x
  3. Step 3: Cross multiply
    2,256.13x = 3,113.52 × 1,261.51
  4. Step 4: Simplify right side
    2,256.13x = 3,927,736.62
  5. Step 5: Solve for x
    x = 3,927,736.62/2,256.13
  6. Step 6: Final answer
    x = 1,740.92

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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.