Home / 7,979.36-11,011.68-4,443.20

Finding the Fourth Proportional to 7,979.36, 11,011.68 and 4,443.20

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Solution

The fourth proportional to 7,979.36, 11,011.68 and 4,443.20 is: 6,131.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.36 : 11,011.68 = 4,443.20 : x
  2. Step 2: Convert to fraction form
    7,979.36/11,011.68 = 4,443.20/x
  3. Step 3: Cross multiply
    7,979.36x = 11,011.68 × 4,443.20
  4. Step 4: Simplify right side
    7,979.36x = 48,927,096.58
  5. Step 5: Solve for x
    x = 48,927,096.58/7,979.36
  6. Step 6: Final answer
    x = 6,131.71

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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.