Home / 8,210.28-11,321.18-5,553.12

Finding the Fourth Proportional to 8,210.28, 11,321.18 and 5,553.12

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Solution

The fourth proportional to 8,210.28, 11,321.18 and 5,553.12 is: 7,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.28 : 11,321.18 = 5,553.12 : x
  2. Step 2: Convert to fraction form
    8,210.28/11,321.18 = 5,553.12/x
  3. Step 3: Cross multiply
    8,210.28x = 11,321.18 × 5,553.12
  4. Step 4: Simplify right side
    8,210.28x = 62,867,871.08
  5. Step 5: Solve for x
    x = 62,867,871.08/8,210.28
  6. Step 6: Final answer
    x = 7,657.21

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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.