Home / 8,205.28-11,327.96-5,415.64

Finding the Fourth Proportional to 8,205.28, 11,327.96 and 5,415.64

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Solution

The fourth proportional to 8,205.28, 11,327.96 and 5,415.64 is: 7,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.28 : 11,327.96 = 5,415.64 : x
  2. Step 2: Convert to fraction form
    8,205.28/11,327.96 = 5,415.64/x
  3. Step 3: Cross multiply
    8,205.28x = 11,327.96 × 5,415.64
  4. Step 4: Simplify right side
    8,205.28x = 61,348,153.29
  5. Step 5: Solve for x
    x = 61,348,153.29/8,205.28
  6. Step 6: Final answer
    x = 7,476.67

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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.