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Finding the Fourth Proportional to 2,695.58, 4,039.02 and 2,121.02

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Solution

The fourth proportional to 2,695.58, 4,039.02 and 2,121.02 is: 3,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.58 : 4,039.02 = 2,121.02 : x
  2. Step 2: Convert to fraction form
    2,695.58/4,039.02 = 2,121.02/x
  3. Step 3: Cross multiply
    2,695.58x = 4,039.02 × 2,121.02
  4. Step 4: Simplify right side
    2,695.58x = 8,566,842.20
  5. Step 5: Solve for x
    x = 8,566,842.20/2,695.58
  6. Step 6: Final answer
    x = 3,178.11

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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.