Home / 8,721.30-12,028.86-6,168

Finding the Fourth Proportional to 8,721.30, 12,028.86 and 6,168

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Solution

The fourth proportional to 8,721.30, 12,028.86 and 6,168 is: 8,507.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.30 : 12,028.86 = 6,168 : x
  2. Step 2: Convert to fraction form
    8,721.30/12,028.86 = 6,168/x
  3. Step 3: Cross multiply
    8,721.30x = 12,028.86 × 6,168
  4. Step 4: Simplify right side
    8,721.30x = 74,194,008.48
  5. Step 5: Solve for x
    x = 74,194,008.48/8,721.30
  6. Step 6: Final answer
    x = 8,507.22

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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.