Home / 8,205.28-11,319.54-5,371.90

Finding the Fourth Proportional to 8,205.28, 11,319.54 and 5,371.90

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Solution

The fourth proportional to 8,205.28, 11,319.54 and 5,371.90 is: 7,410.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.28 : 11,319.54 = 5,371.90 : x
  2. Step 2: Convert to fraction form
    8,205.28/11,319.54 = 5,371.90/x
  3. Step 3: Cross multiply
    8,205.28x = 11,319.54 × 5,371.90
  4. Step 4: Simplify right side
    8,205.28x = 60,807,436.93
  5. Step 5: Solve for x
    x = 60,807,436.93/8,205.28
  6. Step 6: Final answer
    x = 7,410.77

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Double scale
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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.