Home / 7,851.36-11,772.48-4,155.36

Finding the Fourth Proportional to 7,851.36, 11,772.48 and 4,155.36

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Solution

The fourth proportional to 7,851.36, 11,772.48 and 4,155.36 is: 6,230.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.36 : 11,772.48 = 4,155.36 : x
  2. Step 2: Convert to fraction form
    7,851.36/11,772.48 = 4,155.36/x
  3. Step 3: Cross multiply
    7,851.36x = 11,772.48 × 4,155.36
  4. Step 4: Simplify right side
    7,851.36x = 48,918,892.49
  5. Step 5: Solve for x
    x = 48,918,892.49/7,851.36
  6. Step 6: Final answer
    x = 6,230.63

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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.