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Finding the Fourth Proportional to 2,690.15, 4,034.76 and 741.89

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Solution

The fourth proportional to 2,690.15, 4,034.76 and 741.89 is: 1,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.15 : 4,034.76 = 741.89 : x
  2. Step 2: Convert to fraction form
    2,690.15/4,034.76 = 741.89/x
  3. Step 3: Cross multiply
    2,690.15x = 4,034.76 × 741.89
  4. Step 4: Simplify right side
    2,690.15x = 2,993,327.92
  5. Step 5: Solve for x
    x = 2,993,327.92/2,690.15
  6. Step 6: Final answer
    x = 1,112.70

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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.