Home / 7,924.20-11,886.48-2,081.40

Finding the Fourth Proportional to 7,924.20, 11,886.48 and 2,081.40

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Solution

The fourth proportional to 7,924.20, 11,886.48 and 2,081.40 is: 3,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.20 : 11,886.48 = 2,081.40 : x
  2. Step 2: Convert to fraction form
    7,924.20/11,886.48 = 2,081.40/x
  3. Step 3: Cross multiply
    7,924.20x = 11,886.48 × 2,081.40
  4. Step 4: Simplify right side
    7,924.20x = 24,740,519.47
  5. Step 5: Solve for x
    x = 24,740,519.47/7,924.20
  6. Step 6: Final answer
    x = 3,122.15

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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.