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Finding the Fourth Proportional to 2,888.58, 3,986.45 and 2,179.17

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Solution

The fourth proportional to 2,888.58, 3,986.45 and 2,179.17 is: 3,007.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.58 : 3,986.45 = 2,179.17 : x
  2. Step 2: Convert to fraction form
    2,888.58/3,986.45 = 2,179.17/x
  3. Step 3: Cross multiply
    2,888.58x = 3,986.45 × 2,179.17
  4. Step 4: Simplify right side
    2,888.58x = 8,687,141.35
  5. Step 5: Solve for x
    x = 8,687,141.35/2,888.58
  6. Step 6: Final answer
    x = 3,007.41

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1.5x scale

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.