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Finding the Fourth Proportional to 7,225.68, 9,979.67 and 4,863.72

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Solution

The fourth proportional to 7,225.68, 9,979.67 and 4,863.72 is: 6,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.68 : 9,979.67 = 4,863.72 : x
  2. Step 2: Convert to fraction form
    7,225.68/9,979.67 = 4,863.72/x
  3. Step 3: Cross multiply
    7,225.68x = 9,979.67 × 4,863.72
  4. Step 4: Simplify right side
    7,225.68x = 48,538,296.25
  5. Step 5: Solve for x
    x = 48,538,296.25/7,225.68
  6. Step 6: Final answer
    x = 6,717.47

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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.