Home / 3,869.81-5,804.75-1,272.75

Finding the Fourth Proportional to 3,869.81, 5,804.75 and 1,272.75

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Solution

The fourth proportional to 3,869.81, 5,804.75 and 1,272.75 is: 1,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.81 : 5,804.75 = 1,272.75 : x
  2. Step 2: Convert to fraction form
    3,869.81/5,804.75 = 1,272.75/x
  3. Step 3: Cross multiply
    3,869.81x = 5,804.75 × 1,272.75
  4. Step 4: Simplify right side
    3,869.81x = 7,387,998.74
  5. Step 5: Solve for x
    x = 7,387,998.74/3,869.81
  6. Step 6: Final answer
    x = 1,909.14

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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.