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Finding the Fourth Proportional to 6,695.84, 9,239.64 and 3,863.72

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Solution

The fourth proportional to 6,695.84, 9,239.64 and 3,863.72 is: 5,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,695.84 : 9,239.64 = 3,863.72 : x
  2. Step 2: Convert to fraction form
    6,695.84/9,239.64 = 3,863.72/x
  3. Step 3: Cross multiply
    6,695.84x = 9,239.64 × 3,863.72
  4. Step 4: Simplify right side
    6,695.84x = 35,699,381.86
  5. Step 5: Solve for x
    x = 35,699,381.86/6,695.84
  6. Step 6: Final answer
    x = 5,331.58

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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.