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Finding the Fourth Proportional to 6,072, 9,108.16 and 2,775.20

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Solution

The fourth proportional to 6,072, 9,108.16 and 2,775.20 is: 4,162.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,072 : 9,108.16 = 2,775.20 : x
  2. Step 2: Convert to fraction form
    6,072/9,108.16 = 2,775.20/x
  3. Step 3: Cross multiply
    6,072x = 9,108.16 × 2,775.20
  4. Step 4: Simplify right side
    6,072x = 25,276,965.63
  5. Step 5: Solve for x
    x = 25,276,965.63/6,072
  6. Step 6: Final answer
    x = 4,162.87

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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.