Home / 8,921.44-13,380.06-3,988.36

Finding the Fourth Proportional to 8,921.44, 13,380.06 and 3,988.36

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Solution

The fourth proportional to 8,921.44, 13,380.06 and 3,988.36 is: 5,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.44 : 13,380.06 = 3,988.36 : x
  2. Step 2: Convert to fraction form
    8,921.44/13,380.06 = 3,988.36/x
  3. Step 3: Cross multiply
    8,921.44x = 13,380.06 × 3,988.36
  4. Step 4: Simplify right side
    8,921.44x = 53,364,496.10
  5. Step 5: Solve for x
    x = 53,364,496.10/8,921.44
  6. Step 6: Final answer
    x = 5,981.60

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1.5x scale

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.