Home / 7,979.28-11,011.94-5,285.85

Finding the Fourth Proportional to 7,979.28, 11,011.94 and 5,285.85

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Solution

The fourth proportional to 7,979.28, 11,011.94 and 5,285.85 is: 7,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.28 : 11,011.94 = 5,285.85 : x
  2. Step 2: Convert to fraction form
    7,979.28/11,011.94 = 5,285.85/x
  3. Step 3: Cross multiply
    7,979.28x = 11,011.94 × 5,285.85
  4. Step 4: Simplify right side
    7,979.28x = 58,207,415.15
  5. Step 5: Solve for x
    x = 58,207,415.15/7,979.28
  6. Step 6: Final answer
    x = 7,294.82

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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.