Home / 8,979.44-12,390.30-5,000.60

Finding the Fourth Proportional to 8,979.44, 12,390.30 and 5,000.60

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Solution

The fourth proportional to 8,979.44, 12,390.30 and 5,000.60 is: 6,900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.44 : 12,390.30 = 5,000.60 : x
  2. Step 2: Convert to fraction form
    8,979.44/12,390.30 = 5,000.60/x
  3. Step 3: Cross multiply
    8,979.44x = 12,390.30 × 5,000.60
  4. Step 4: Simplify right side
    8,979.44x = 61,958,934.18
  5. Step 5: Solve for x
    x = 61,958,934.18/8,979.44
  6. Step 6: Final answer
    x = 6,900.09

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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.