Home / 8,272.41-11,404.75-5,615.21

Finding the Fourth Proportional to 8,272.41, 11,404.75 and 5,615.21

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Solution

The fourth proportional to 8,272.41, 11,404.75 and 5,615.21 is: 7,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.41 : 11,404.75 = 5,615.21 : x
  2. Step 2: Convert to fraction form
    8,272.41/11,404.75 = 5,615.21/x
  3. Step 3: Cross multiply
    8,272.41x = 11,404.75 × 5,615.21
  4. Step 4: Simplify right side
    8,272.41x = 64,040,027.10
  5. Step 5: Solve for x
    x = 64,040,027.10/8,272.41
  6. Step 6: Final answer
    x = 7,741.40

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Half 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.