Home / 6,979.61-9,631.64-3,995.24

Finding the Fourth Proportional to 6,979.61, 9,631.64 and 3,995.24

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Solution

The fourth proportional to 6,979.61, 9,631.64 and 3,995.24 is: 5,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.61 : 9,631.64 = 3,995.24 : x
  2. Step 2: Convert to fraction form
    6,979.61/9,631.64 = 3,995.24/x
  3. Step 3: Cross multiply
    6,979.61x = 9,631.64 × 3,995.24
  4. Step 4: Simplify right side
    6,979.61x = 38,480,717.50
  5. Step 5: Solve for x
    x = 38,480,717.50/6,979.61
  6. Step 6: Final answer
    x = 5,513.31

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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.