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Finding the Fourth Proportional to 2,865.02, 3,954.03 and 1,686.07

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Solution

The fourth proportional to 2,865.02, 3,954.03 and 1,686.07 is: 2,326.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.02 : 3,954.03 = 1,686.07 : x
  2. Step 2: Convert to fraction form
    2,865.02/3,954.03 = 1,686.07/x
  3. Step 3: Cross multiply
    2,865.02x = 3,954.03 × 1,686.07
  4. Step 4: Simplify right side
    2,865.02x = 6,666,751.59
  5. Step 5: Solve for x
    x = 6,666,751.59/2,865.02
  6. Step 6: Final answer
    x = 2,326.95

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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.