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Finding the Fourth Proportional to 2,753.77, 4,131.07 and 998.90

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Solution

The fourth proportional to 2,753.77, 4,131.07 and 998.90 is: 1,498.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.77 : 4,131.07 = 998.90 : x
  2. Step 2: Convert to fraction form
    2,753.77/4,131.07 = 998.90/x
  3. Step 3: Cross multiply
    2,753.77x = 4,131.07 × 998.90
  4. Step 4: Simplify right side
    2,753.77x = 4,126,525.82
  5. Step 5: Solve for x
    x = 4,126,525.82/2,753.77
  6. Step 6: Final answer
    x = 1,498.50

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.