Home / 8,979.42-12,402.71-6,338.63

Finding the Fourth Proportional to 8,979.42, 12,402.71 and 6,338.63

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Solution

The fourth proportional to 8,979.42, 12,402.71 and 6,338.63 is: 8,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.42 : 12,402.71 = 6,338.63 : x
  2. Step 2: Convert to fraction form
    8,979.42/12,402.71 = 6,338.63/x
  3. Step 3: Cross multiply
    8,979.42x = 12,402.71 × 6,338.63
  4. Step 4: Simplify right side
    8,979.42x = 78,616,095.98
  5. Step 5: Solve for x
    x = 78,616,095.98/8,979.42
  6. Step 6: Final answer
    x = 8,755.14

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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.