Home / 2,261.21-3,120.26-1,316.96

Finding the Fourth Proportional to 2,261.21, 3,120.26 and 1,316.96

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Solution

The fourth proportional to 2,261.21, 3,120.26 and 1,316.96 is: 1,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.21 : 3,120.26 = 1,316.96 : x
  2. Step 2: Convert to fraction form
    2,261.21/3,120.26 = 1,316.96/x
  3. Step 3: Cross multiply
    2,261.21x = 3,120.26 × 1,316.96
  4. Step 4: Simplify right side
    2,261.21x = 4,109,235.42
  5. Step 5: Solve for x
    x = 4,109,235.42/2,261.21
  6. Step 6: Final answer
    x = 1,817.28

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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.