Home / 2,261.12-3,117.36-1,631.12

Finding the Fourth Proportional to 2,261.12, 3,117.36 and 1,631.12

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Solution

The fourth proportional to 2,261.12, 3,117.36 and 1,631.12 is: 2,248.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.12 : 3,117.36 = 1,631.12 : x
  2. Step 2: Convert to fraction form
    2,261.12/3,117.36 = 1,631.12/x
  3. Step 3: Cross multiply
    2,261.12x = 3,117.36 × 1,631.12
  4. Step 4: Simplify right side
    2,261.12x = 5,084,788.24
  5. Step 5: Solve for x
    x = 5,084,788.24/2,261.12
  6. Step 6: Final answer
    x = 2,248.79

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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.