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Finding the Fourth Proportional to 2,690.68, 4,036.03 and 958.09

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Solution

The fourth proportional to 2,690.68, 4,036.03 and 958.09 is: 1,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.68 : 4,036.03 = 958.09 : x
  2. Step 2: Convert to fraction form
    2,690.68/4,036.03 = 958.09/x
  3. Step 3: Cross multiply
    2,690.68x = 4,036.03 × 958.09
  4. Step 4: Simplify right side
    2,690.68x = 3,866,879.98
  5. Step 5: Solve for x
    x = 3,866,879.98/2,690.68
  6. Step 6: Final answer
    x = 1,437.14

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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.