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Finding the Fourth Proportional to 9,088.60, 13,620.20 and 4,919.60

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Solution

The fourth proportional to 9,088.60, 13,620.20 and 4,919.60 is: 7,372.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,088.60 : 13,620.20 = 4,919.60 : x
  2. Step 2: Convert to fraction form
    9,088.60/13,620.20 = 4,919.60/x
  3. Step 3: Cross multiply
    9,088.60x = 13,620.20 × 4,919.60
  4. Step 4: Simplify right side
    9,088.60x = 67,005,935.92
  5. Step 5: Solve for x
    x = 67,005,935.92/9,088.60
  6. Step 6: Final answer
    x = 7,372.53

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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.