Home / 2,261.76-3,120.86-1,267.08

Finding the Fourth Proportional to 2,261.76, 3,120.86 and 1,267.08

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Solution

The fourth proportional to 2,261.76, 3,120.86 and 1,267.08 is: 1,748.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.76 : 3,120.86 = 1,267.08 : x
  2. Step 2: Convert to fraction form
    2,261.76/3,120.86 = 1,267.08/x
  3. Step 3: Cross multiply
    2,261.76x = 3,120.86 × 1,267.08
  4. Step 4: Simplify right side
    2,261.76x = 3,954,379.29
  5. Step 5: Solve for x
    x = 3,954,379.29/2,261.76
  6. Step 6: Final answer
    x = 1,748.36

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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.