Home / 1,284.96-1,926.72-419.04

Finding the Fourth Proportional to 1,284.96, 1,926.72 and 419.04

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Solution

The fourth proportional to 1,284.96, 1,926.72 and 419.04 is: 628.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.96 : 1,926.72 = 419.04 : x
  2. Step 2: Convert to fraction form
    1,284.96/1,926.72 = 419.04/x
  3. Step 3: Cross multiply
    1,284.96x = 1,926.72 × 419.04
  4. Step 4: Simplify right side
    1,284.96x = 807,372.75
  5. Step 5: Solve for x
    x = 807,372.75/1,284.96
  6. Step 6: Final answer
    x = 628.33

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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.