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Finding the Fourth Proportional to 1,873.79, 2,811.18 and 1,669.79

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Solution

The fourth proportional to 1,873.79, 2,811.18 and 1,669.79 is: 2,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,873.79 : 2,811.18 = 1,669.79 : x
  2. Step 2: Convert to fraction form
    1,873.79/2,811.18 = 1,669.79/x
  3. Step 3: Cross multiply
    1,873.79x = 2,811.18 × 1,669.79
  4. Step 4: Simplify right side
    1,873.79x = 4,694,080.25
  5. Step 5: Solve for x
    x = 4,694,080.25/1,873.79
  6. Step 6: Final answer
    x = 2,505.13

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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.