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Finding the Fourth Proportional to 2,686.97, 4,030.48 and 838.01

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Solution

The fourth proportional to 2,686.97, 4,030.48 and 838.01 is: 1,257.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.97 : 4,030.48 = 838.01 : x
  2. Step 2: Convert to fraction form
    2,686.97/4,030.48 = 838.01/x
  3. Step 3: Cross multiply
    2,686.97x = 4,030.48 × 838.01
  4. Step 4: Simplify right side
    2,686.97x = 3,377,582.54
  5. Step 5: Solve for x
    x = 3,377,582.54/2,686.97
  6. Step 6: Final answer
    x = 1,257.02

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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.