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Finding the Fourth Proportional to 5,663.46, 7,815.30 and 3,145.73

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Solution

The fourth proportional to 5,663.46, 7,815.30 and 3,145.73 is: 4,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,663.46 : 7,815.30 = 3,145.73 : x
  2. Step 2: Convert to fraction form
    5,663.46/7,815.30 = 3,145.73/x
  3. Step 3: Cross multiply
    5,663.46x = 7,815.30 × 3,145.73
  4. Step 4: Simplify right side
    5,663.46x = 24,584,784.59
  5. Step 5: Solve for x
    x = 24,584,784.59/5,663.46
  6. Step 6: Final answer
    x = 4,340.95

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Half scale
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Double scale
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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.