Home / 5,122.41-7,678.75-1,833.81

Finding the Fourth Proportional to 5,122.41, 7,678.75 and 1,833.81

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Solution

The fourth proportional to 5,122.41, 7,678.75 and 1,833.81 is: 2,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.41 : 7,678.75 = 1,833.81 : x
  2. Step 2: Convert to fraction form
    5,122.41/7,678.75 = 1,833.81/x
  3. Step 3: Cross multiply
    5,122.41x = 7,678.75 × 1,833.81
  4. Step 4: Simplify right side
    5,122.41x = 14,081,368.54
  5. Step 5: Solve for x
    x = 14,081,368.54/5,122.41
  6. Step 6: Final answer
    x = 2,748.97

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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.