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Finding the Fourth Proportional to 3,606.60, 4,978.08 and 2,280.72

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Solution

The fourth proportional to 3,606.60, 4,978.08 and 2,280.72 is: 3,148.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,606.60 : 4,978.08 = 2,280.72 : x
  2. Step 2: Convert to fraction form
    3,606.60/4,978.08 = 2,280.72/x
  3. Step 3: Cross multiply
    3,606.60x = 4,978.08 × 2,280.72
  4. Step 4: Simplify right side
    3,606.60x = 11,353,606.62
  5. Step 5: Solve for x
    x = 11,353,606.62/3,606.60
  6. Step 6: Final answer
    x = 3,148.01

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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.