Home / 7,319.70-10,979.55-6,517.80

Finding the Fourth Proportional to 7,319.70, 10,979.55 and 6,517.80

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Solution

The fourth proportional to 7,319.70, 10,979.55 and 6,517.80 is: 9,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.70 : 10,979.55 = 6,517.80 : x
  2. Step 2: Convert to fraction form
    7,319.70/10,979.55 = 6,517.80/x
  3. Step 3: Cross multiply
    7,319.70x = 10,979.55 × 6,517.80
  4. Step 4: Simplify right side
    7,319.70x = 71,562,510.99
  5. Step 5: Solve for x
    x = 71,562,510.99/7,319.70
  6. Step 6: Final answer
    x = 9,776.70

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1.5x scale

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.