Home / 3,889.80-5,834.99-1,116.45

Finding the Fourth Proportional to 3,889.80, 5,834.99 and 1,116.45

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Solution

The fourth proportional to 3,889.80, 5,834.99 and 1,116.45 is: 1,674.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.80 : 5,834.99 = 1,116.45 : x
  2. Step 2: Convert to fraction form
    3,889.80/5,834.99 = 1,116.45/x
  3. Step 3: Cross multiply
    3,889.80x = 5,834.99 × 1,116.45
  4. Step 4: Simplify right side
    3,889.80x = 6,514,474.59
  5. Step 5: Solve for x
    x = 6,514,474.59/3,889.80
  6. Step 6: Final answer
    x = 1,674.76

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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.