Home / 4,781.81-7,174.70-2,318.46

Finding the Fourth Proportional to 4,781.81, 7,174.70 and 2,318.46

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Solution

The fourth proportional to 4,781.81, 7,174.70 and 2,318.46 is: 3,478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.81 : 7,174.70 = 2,318.46 : x
  2. Step 2: Convert to fraction form
    4,781.81/7,174.70 = 2,318.46/x
  3. Step 3: Cross multiply
    4,781.81x = 7,174.70 × 2,318.46
  4. Step 4: Simplify right side
    4,781.81x = 16,634,243.37
  5. Step 5: Solve for x
    x = 16,634,243.37/4,781.81
  6. Step 6: Final answer
    x = 3,478.65

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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.