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Finding the Fourth Proportional to 5,336.79, 7,364.85 and 2,979.11

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Solution

The fourth proportional to 5,336.79, 7,364.85 and 2,979.11 is: 4,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,336.79 : 7,364.85 = 2,979.11 : x
  2. Step 2: Convert to fraction form
    5,336.79/7,364.85 = 2,979.11/x
  3. Step 3: Cross multiply
    5,336.79x = 7,364.85 × 2,979.11
  4. Step 4: Simplify right side
    5,336.79x = 21,940,646.56
  5. Step 5: Solve for x
    x = 21,940,646.56/5,336.79
  6. Step 6: Final answer
    x = 4,111.21

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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.