Home / 5,515-8,272.50-5,238.16

Finding the Fourth Proportional to 5,515, 8,272.50 and 5,238.16

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Solution

The fourth proportional to 5,515, 8,272.50 and 5,238.16 is: 7,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515 : 8,272.50 = 5,238.16 : x
  2. Step 2: Convert to fraction form
    5,515/8,272.50 = 5,238.16/x
  3. Step 3: Cross multiply
    5,515x = 8,272.50 × 5,238.16
  4. Step 4: Simplify right side
    5,515x = 43,332,678.60
  5. Step 5: Solve for x
    x = 43,332,678.60/5,515
  6. Step 6: Final answer
    x = 7,857.24

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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.