Home / 7,319.09-10,979.72-2,124.29

Finding the Fourth Proportional to 7,319.09, 10,979.72 and 2,124.29

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Solution

The fourth proportional to 7,319.09, 10,979.72 and 2,124.29 is: 3,186.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.09 : 10,979.72 = 2,124.29 : x
  2. Step 2: Convert to fraction form
    7,319.09/10,979.72 = 2,124.29/x
  3. Step 3: Cross multiply
    7,319.09x = 10,979.72 × 2,124.29
  4. Step 4: Simplify right side
    7,319.09x = 23,324,134.19
  5. Step 5: Solve for x
    x = 23,324,134.19/7,319.09
  6. Step 6: Final answer
    x = 3,186.75

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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.