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Finding the Fourth Proportional to 9,904.68, 14,856.66 and 2,979

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Solution

The fourth proportional to 9,904.68, 14,856.66 and 2,979 is: 4,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.68 : 14,856.66 = 2,979 : x
  2. Step 2: Convert to fraction form
    9,904.68/14,856.66 = 2,979/x
  3. Step 3: Cross multiply
    9,904.68x = 14,856.66 × 2,979
  4. Step 4: Simplify right side
    9,904.68x = 44,257,990.14
  5. Step 5: Solve for x
    x = 44,257,990.14/9,904.68
  6. Step 6: Final answer
    x = 4,468.39

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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.