Home / 1,277.32-1,764.44-1,001.05

Finding the Fourth Proportional to 1,277.32, 1,764.44 and 1,001.05

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Solution

The fourth proportional to 1,277.32, 1,764.44 and 1,001.05 is: 1,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.32 : 1,764.44 = 1,001.05 : x
  2. Step 2: Convert to fraction form
    1,277.32/1,764.44 = 1,001.05/x
  3. Step 3: Cross multiply
    1,277.32x = 1,764.44 × 1,001.05
  4. Step 4: Simplify right side
    1,277.32x = 1,766,292.66
  5. Step 5: Solve for x
    x = 1,766,292.66/1,277.32
  6. Step 6: Final answer
    x = 1,382.81

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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.