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Finding the Fourth Proportional to 5,664.61, 7,817.17 and 3,146.65

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Solution

The fourth proportional to 5,664.61, 7,817.17 and 3,146.65 is: 4,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,664.61 : 7,817.17 = 3,146.65 : x
  2. Step 2: Convert to fraction form
    5,664.61/7,817.17 = 3,146.65/x
  3. Step 3: Cross multiply
    5,664.61x = 7,817.17 × 3,146.65
  4. Step 4: Simplify right side
    5,664.61x = 24,597,929.29
  5. Step 5: Solve for x
    x = 24,597,929.29/5,664.61
  6. Step 6: Final answer
    x = 4,342.39

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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.