Home / 3,776.70-5,665.05-1,311.53

Finding the Fourth Proportional to 3,776.70, 5,665.05 and 1,311.53

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Solution

The fourth proportional to 3,776.70, 5,665.05 and 1,311.53 is: 1,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,776.70 : 5,665.05 = 1,311.53 : x
  2. Step 2: Convert to fraction form
    3,776.70/5,665.05 = 1,311.53/x
  3. Step 3: Cross multiply
    3,776.70x = 5,665.05 × 1,311.53
  4. Step 4: Simplify right side
    3,776.70x = 7,429,854.70
  5. Step 5: Solve for x
    x = 7,429,854.70/3,776.70
  6. Step 6: Final answer
    x = 1,967.29

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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.