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Finding the Fourth Proportional to 1,926.65, 2,890.28 and 627.81

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Solution

The fourth proportional to 1,926.65, 2,890.28 and 627.81 is: 941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.65 : 2,890.28 = 627.81 : x
  2. Step 2: Convert to fraction form
    1,926.65/2,890.28 = 627.81/x
  3. Step 3: Cross multiply
    1,926.65x = 2,890.28 × 627.81
  4. Step 4: Simplify right side
    1,926.65x = 1,814,546.69
  5. Step 5: Solve for x
    x = 1,814,546.69/1,926.65
  6. Step 6: Final answer
    x = 941.81

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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.