Home / 7,979.74-11,012.12-4,997.32

Finding the Fourth Proportional to 7,979.74, 11,012.12 and 4,997.32

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Solution

The fourth proportional to 7,979.74, 11,012.12 and 4,997.32 is: 6,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.74 : 11,012.12 = 4,997.32 : x
  2. Step 2: Convert to fraction form
    7,979.74/11,012.12 = 4,997.32/x
  3. Step 3: Cross multiply
    7,979.74x = 11,012.12 × 4,997.32
  4. Step 4: Simplify right side
    7,979.74x = 55,031,053.74
  5. Step 5: Solve for x
    x = 55,031,053.74/7,979.74
  6. Step 6: Final answer
    x = 6,896.35

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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.