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Finding the Fourth Proportional to 8,369.80, 11,549.82 and 4,643.80

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Solution

The fourth proportional to 8,369.80, 11,549.82 and 4,643.80 is: 6,408.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.80 : 11,549.82 = 4,643.80 : x
  2. Step 2: Convert to fraction form
    8,369.80/11,549.82 = 4,643.80/x
  3. Step 3: Cross multiply
    8,369.80x = 11,549.82 × 4,643.80
  4. Step 4: Simplify right side
    8,369.80x = 53,635,054.12
  5. Step 5: Solve for x
    x = 53,635,054.12/8,369.80
  6. Step 6: Final answer
    x = 6,408.16

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1.5x scale

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.