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Finding the Fourth Proportional to 9,992.17, 14,990.55 and 2,972.02

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Solution

The fourth proportional to 9,992.17, 14,990.55 and 2,972.02 is: 4,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.17 : 14,990.55 = 2,972.02 : x
  2. Step 2: Convert to fraction form
    9,992.17/14,990.55 = 2,972.02/x
  3. Step 3: Cross multiply
    9,992.17x = 14,990.55 × 2,972.02
  4. Step 4: Simplify right side
    9,992.17x = 44,552,214.41
  5. Step 5: Solve for x
    x = 44,552,214.41/9,992.17
  6. Step 6: Final answer
    x = 4,458.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.