Home / 2,261.36-3,119.64-1,329.20

Finding the Fourth Proportional to 2,261.36, 3,119.64 and 1,329.20

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Solution

The fourth proportional to 2,261.36, 3,119.64 and 1,329.20 is: 1,833.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.36 : 3,119.64 = 1,329.20 : x
  2. Step 2: Convert to fraction form
    2,261.36/3,119.64 = 1,329.20/x
  3. Step 3: Cross multiply
    2,261.36x = 3,119.64 × 1,329.20
  4. Step 4: Simplify right side
    2,261.36x = 4,146,625.49
  5. Step 5: Solve for x
    x = 4,146,625.49/2,261.36
  6. Step 6: Final answer
    x = 1,833.69

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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.