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Finding the Fourth Proportional to 1,891.99, 2,610.10 and 1,105.69

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Solution

The fourth proportional to 1,891.99, 2,610.10 and 1,105.69 is: 1,525.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.99 : 2,610.10 = 1,105.69 : x
  2. Step 2: Convert to fraction form
    1,891.99/2,610.10 = 1,105.69/x
  3. Step 3: Cross multiply
    1,891.99x = 2,610.10 × 1,105.69
  4. Step 4: Simplify right side
    1,891.99x = 2,885,961.47
  5. Step 5: Solve for x
    x = 2,885,961.47/1,891.99
  6. Step 6: Final answer
    x = 1,525.36

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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.