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Finding the Fourth Proportional to 6,388.88, 8,816.65 and 3,594.38

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Solution

The fourth proportional to 6,388.88, 8,816.65 and 3,594.38 is: 4,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.88 : 8,816.65 = 3,594.38 : x
  2. Step 2: Convert to fraction form
    6,388.88/8,816.65 = 3,594.38/x
  3. Step 3: Cross multiply
    6,388.88x = 8,816.65 × 3,594.38
  4. Step 4: Simplify right side
    6,388.88x = 31,690,337.36
  5. Step 5: Solve for x
    x = 31,690,337.36/6,388.88
  6. Step 6: Final answer
    x = 4,960.24

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.