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Finding the Fourth Proportional to 5,382.66, 7,428.05 and 2,992.62

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Solution

The fourth proportional to 5,382.66, 7,428.05 and 2,992.62 is: 4,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.66 : 7,428.05 = 2,992.62 : x
  2. Step 2: Convert to fraction form
    5,382.66/7,428.05 = 2,992.62/x
  3. Step 3: Cross multiply
    5,382.66x = 7,428.05 × 2,992.62
  4. Step 4: Simplify right side
    5,382.66x = 22,229,330.99
  5. Step 5: Solve for x
    x = 22,229,330.99/5,382.66
  6. Step 6: Final answer
    x = 4,129.80

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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.