Home / 7,979.80-11,000.70-5,614.60

Finding the Fourth Proportional to 7,979.80, 11,000.70 and 5,614.60

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Solution

The fourth proportional to 7,979.80, 11,000.70 and 5,614.60 is: 7,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.80 : 11,000.70 = 5,614.60 : x
  2. Step 2: Convert to fraction form
    7,979.80/11,000.70 = 5,614.60/x
  3. Step 3: Cross multiply
    7,979.80x = 11,000.70 × 5,614.60
  4. Step 4: Simplify right side
    7,979.80x = 61,764,530.22
  5. Step 5: Solve for x
    x = 61,764,530.22/7,979.80
  6. Step 6: Final answer
    x = 7,740.11

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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.