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Finding the Fourth Proportional to 8,809.65, 13,214.49 and 2,653.65

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Solution

The fourth proportional to 8,809.65, 13,214.49 and 2,653.65 is: 3,980.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.65 : 13,214.49 = 2,653.65 : x
  2. Step 2: Convert to fraction form
    8,809.65/13,214.49 = 2,653.65/x
  3. Step 3: Cross multiply
    8,809.65x = 13,214.49 × 2,653.65
  4. Step 4: Simplify right side
    8,809.65x = 35,066,631.39
  5. Step 5: Solve for x
    x = 35,066,631.39/8,809.65
  6. Step 6: Final answer
    x = 3,980.48

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Double scale
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Similar ratio
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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.