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Finding the Fourth Proportional to 4,437.64, 6,655.78 and 2,789.16

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Solution

The fourth proportional to 4,437.64, 6,655.78 and 2,789.16 is: 4,183.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,437.64 : 6,655.78 = 2,789.16 : x
  2. Step 2: Convert to fraction form
    4,437.64/6,655.78 = 2,789.16/x
  3. Step 3: Cross multiply
    4,437.64x = 6,655.78 × 2,789.16
  4. Step 4: Simplify right side
    4,437.64x = 18,564,035.34
  5. Step 5: Solve for x
    x = 18,564,035.34/4,437.64
  6. Step 6: Final answer
    x = 4,183.31

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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.