Home / 8,428.13-11,627.40-5,239.16

Finding the Fourth Proportional to 8,428.13, 11,627.40 and 5,239.16

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Solution

The fourth proportional to 8,428.13, 11,627.40 and 5,239.16 is: 7,227.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.13 : 11,627.40 = 5,239.16 : x
  2. Step 2: Convert to fraction form
    8,428.13/11,627.40 = 5,239.16/x
  3. Step 3: Cross multiply
    8,428.13x = 11,627.40 × 5,239.16
  4. Step 4: Simplify right side
    8,428.13x = 60,917,750.85
  5. Step 5: Solve for x
    x = 60,917,750.85/8,428.13
  6. Step 6: Final answer
    x = 7,227.91

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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.