Home / 8,680.06-11,979.68-5,322.28

Finding the Fourth Proportional to 8,680.06, 11,979.68 and 5,322.28

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Solution

The fourth proportional to 8,680.06, 11,979.68 and 5,322.28 is: 7,345.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.06 : 11,979.68 = 5,322.28 : x
  2. Step 2: Convert to fraction form
    8,680.06/11,979.68 = 5,322.28/x
  3. Step 3: Cross multiply
    8,680.06x = 11,979.68 × 5,322.28
  4. Step 4: Simplify right side
    8,680.06x = 63,759,211.27
  5. Step 5: Solve for x
    x = 63,759,211.27/8,680.06
  6. Step 6: Final answer
    x = 7,345.48

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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.