Home / 7,319.45-10,979.21-1,772.79

Finding the Fourth Proportional to 7,319.45, 10,979.21 and 1,772.79

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Solution

The fourth proportional to 7,319.45, 10,979.21 and 1,772.79 is: 2,659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.45 : 10,979.21 = 1,772.79 : x
  2. Step 2: Convert to fraction form
    7,319.45/10,979.21 = 1,772.79/x
  3. Step 3: Cross multiply
    7,319.45x = 10,979.21 × 1,772.79
  4. Step 4: Simplify right side
    7,319.45x = 19,463,824.83
  5. Step 5: Solve for x
    x = 19,463,824.83/7,319.45
  6. Step 6: Final answer
    x = 2,659.19

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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.