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Finding the Fourth Proportional to 1,260.76, 1,739.73 and 1,167.88

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Solution

The fourth proportional to 1,260.76, 1,739.73 and 1,167.88 is: 1,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.76 : 1,739.73 = 1,167.88 : x
  2. Step 2: Convert to fraction form
    1,260.76/1,739.73 = 1,167.88/x
  3. Step 3: Cross multiply
    1,260.76x = 1,739.73 × 1,167.88
  4. Step 4: Simplify right side
    1,260.76x = 2,031,795.87
  5. Step 5: Solve for x
    x = 2,031,795.87/1,260.76
  6. Step 6: Final answer
    x = 1,611.56

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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.