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Finding the Fourth Proportional to 9,618, 13,272.84 and 5,426.16

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Solution

The fourth proportional to 9,618, 13,272.84 and 5,426.16 is: 7,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,618 : 13,272.84 = 5,426.16 : x
  2. Step 2: Convert to fraction form
    9,618/13,272.84 = 5,426.16/x
  3. Step 3: Cross multiply
    9,618x = 13,272.84 × 5,426.16
  4. Step 4: Simplify right side
    9,618x = 72,020,553.49
  5. Step 5: Solve for x
    x = 72,020,553.49/9,618
  6. Step 6: Final answer
    x = 7,488.10

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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.