Home / 7,979.72-11,970.20-2,432.60

Finding the Fourth Proportional to 7,979.72, 11,970.20 and 2,432.60

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Solution

The fourth proportional to 7,979.72, 11,970.20 and 2,432.60 is: 3,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.72 : 11,970.20 = 2,432.60 : x
  2. Step 2: Convert to fraction form
    7,979.72/11,970.20 = 2,432.60/x
  3. Step 3: Cross multiply
    7,979.72x = 11,970.20 × 2,432.60
  4. Step 4: Simplify right side
    7,979.72x = 29,118,708.52
  5. Step 5: Solve for x
    x = 29,118,708.52/7,979.72
  6. Step 6: Final answer
    x = 3,649.09

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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.