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Finding the Fourth Proportional to 9,165.60, 13,737.60 and 3,318.48

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Solution

The fourth proportional to 9,165.60, 13,737.60 and 3,318.48 is: 4,973.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.60 : 13,737.60 = 3,318.48 : x
  2. Step 2: Convert to fraction form
    9,165.60/13,737.60 = 3,318.48/x
  3. Step 3: Cross multiply
    9,165.60x = 13,737.60 × 3,318.48
  4. Step 4: Simplify right side
    9,165.60x = 45,587,950.85
  5. Step 5: Solve for x
    x = 45,587,950.85/9,165.60
  6. Step 6: Final answer
    x = 4,973.81

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1.5x scale

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.