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Finding the Fourth Proportional to 8,774.64, 13,162.68 and 2,618.64

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Solution

The fourth proportional to 8,774.64, 13,162.68 and 2,618.64 is: 3,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,774.64 : 13,162.68 = 2,618.64 : x
  2. Step 2: Convert to fraction form
    8,774.64/13,162.68 = 2,618.64/x
  3. Step 3: Cross multiply
    8,774.64x = 13,162.68 × 2,618.64
  4. Step 4: Simplify right side
    8,774.64x = 34,468,320.36
  5. Step 5: Solve for x
    x = 34,468,320.36/8,774.64
  6. Step 6: Final answer
    x = 3,928.17

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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.