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Finding the Fourth Proportional to 1,838.67, 2,756.98 and 958.97

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Solution

The fourth proportional to 1,838.67, 2,756.98 and 958.97 is: 1,437.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.67 : 2,756.98 = 958.97 : x
  2. Step 2: Convert to fraction form
    1,838.67/2,756.98 = 958.97/x
  3. Step 3: Cross multiply
    1,838.67x = 2,756.98 × 958.97
  4. Step 4: Simplify right side
    1,838.67x = 2,643,861.11
  5. Step 5: Solve for x
    x = 2,643,861.11/1,838.67
  6. Step 6: Final answer
    x = 1,437.92

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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.