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Finding the Fourth Proportional to 2,803.05, 3,867.42 and 1,807.95

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Solution

The fourth proportional to 2,803.05, 3,867.42 and 1,807.95 is: 2,494.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.05 : 3,867.42 = 1,807.95 : x
  2. Step 2: Convert to fraction form
    2,803.05/3,867.42 = 1,807.95/x
  3. Step 3: Cross multiply
    2,803.05x = 3,867.42 × 1,807.95
  4. Step 4: Simplify right side
    2,803.05x = 6,992,101.99
  5. Step 5: Solve for x
    x = 6,992,101.99/2,803.05
  6. Step 6: Final answer
    x = 2,494.46

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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.