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Finding the Fourth Proportional to 2,670.89, 4,008.84 and 1,355.58

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Solution

The fourth proportional to 2,670.89, 4,008.84 and 1,355.58 is: 2,034.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.89 : 4,008.84 = 1,355.58 : x
  2. Step 2: Convert to fraction form
    2,670.89/4,008.84 = 1,355.58/x
  3. Step 3: Cross multiply
    2,670.89x = 4,008.84 × 1,355.58
  4. Step 4: Simplify right side
    2,670.89x = 5,434,323.44
  5. Step 5: Solve for x
    x = 5,434,323.44/2,670.89
  6. Step 6: Final answer
    x = 2,034.65

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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.