Home / 2,815.70-3,886.14-1,637.46

Finding the Fourth Proportional to 2,815.70, 3,886.14 and 1,637.46

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Solution

The fourth proportional to 2,815.70, 3,886.14 and 1,637.46 is: 2,259.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.70 : 3,886.14 = 1,637.46 : x
  2. Step 2: Convert to fraction form
    2,815.70/3,886.14 = 1,637.46/x
  3. Step 3: Cross multiply
    2,815.70x = 3,886.14 × 1,637.46
  4. Step 4: Simplify right side
    2,815.70x = 6,363,398.80
  5. Step 5: Solve for x
    x = 6,363,398.80/2,815.70
  6. Step 6: Final answer
    x = 2,259.97

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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.