Home / 8,684.15-11,983.56-5,540

Finding the Fourth Proportional to 8,684.15, 11,983.56 and 5,540

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Solution

The fourth proportional to 8,684.15, 11,983.56 and 5,540 is: 7,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.15 : 11,983.56 = 5,540 : x
  2. Step 2: Convert to fraction form
    8,684.15/11,983.56 = 5,540/x
  3. Step 3: Cross multiply
    8,684.15x = 11,983.56 × 5,540
  4. Step 4: Simplify right side
    8,684.15x = 66,388,922.40
  5. Step 5: Solve for x
    x = 66,388,922.40/8,684.15
  6. Step 6: Final answer
    x = 7,644.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.