Home / 1,871.51-2,799.97-1,638.63

Finding the Fourth Proportional to 1,871.51, 2,799.97 and 1,638.63

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Solution

The fourth proportional to 1,871.51, 2,799.97 and 1,638.63 is: 2,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.51 : 2,799.97 = 1,638.63 : x
  2. Step 2: Convert to fraction form
    1,871.51/2,799.97 = 1,638.63/x
  3. Step 3: Cross multiply
    1,871.51x = 2,799.97 × 1,638.63
  4. Step 4: Simplify right side
    1,871.51x = 4,588,110.74
  5. Step 5: Solve for x
    x = 4,588,110.74/1,871.51
  6. Step 6: Final answer
    x = 2,451.56

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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.