Home / 2,261.75-3,120.96-1,317.74

Finding the Fourth Proportional to 2,261.75, 3,120.96 and 1,317.74

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Solution

The fourth proportional to 2,261.75, 3,120.96 and 1,317.74 is: 1,818.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.75 : 3,120.96 = 1,317.74 : x
  2. Step 2: Convert to fraction form
    2,261.75/3,120.96 = 1,317.74/x
  3. Step 3: Cross multiply
    2,261.75x = 3,120.96 × 1,317.74
  4. Step 4: Simplify right side
    2,261.75x = 4,112,613.83
  5. Step 5: Solve for x
    x = 4,112,613.83/2,261.75
  6. Step 6: Final answer
    x = 1,818.33

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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.