Home / 7,979.67-11,011.95-4,443.21

Finding the Fourth Proportional to 7,979.67, 11,011.95 and 4,443.21

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Solution

The fourth proportional to 7,979.67, 11,011.95 and 4,443.21 is: 6,131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.67 : 11,011.95 = 4,443.21 : x
  2. Step 2: Convert to fraction form
    7,979.67/11,011.95 = 4,443.21/x
  3. Step 3: Cross multiply
    7,979.67x = 11,011.95 × 4,443.21
  4. Step 4: Simplify right side
    7,979.67x = 48,928,406.36
  5. Step 5: Solve for x
    x = 48,928,406.36/7,979.67
  6. Step 6: Final answer
    x = 6,131.63

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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.