Home / 2,261.97-3,119.01-1,421.66

Finding the Fourth Proportional to 2,261.97, 3,119.01 and 1,421.66

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Solution

The fourth proportional to 2,261.97, 3,119.01 and 1,421.66 is: 1,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.97 : 3,119.01 = 1,421.66 : x
  2. Step 2: Convert to fraction form
    2,261.97/3,119.01 = 1,421.66/x
  3. Step 3: Cross multiply
    2,261.97x = 3,119.01 × 1,421.66
  4. Step 4: Simplify right side
    2,261.97x = 4,434,172.45
  5. Step 5: Solve for x
    x = 4,434,172.45/2,261.97
  6. Step 6: Final answer
    x = 1,960.31

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Half scale
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Double scale
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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.