Home / 3,942.81-5,913.75-1,020.89

Finding the Fourth Proportional to 3,942.81, 5,913.75 and 1,020.89

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Solution

The fourth proportional to 3,942.81, 5,913.75 and 1,020.89 is: 1,531.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.81 : 5,913.75 = 1,020.89 : x
  2. Step 2: Convert to fraction form
    3,942.81/5,913.75 = 1,020.89/x
  3. Step 3: Cross multiply
    3,942.81x = 5,913.75 × 1,020.89
  4. Step 4: Simplify right side
    3,942.81x = 6,037,288.24
  5. Step 5: Solve for x
    x = 6,037,288.24/3,942.81
  6. Step 6: Final answer
    x = 1,531.21

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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.