Home / 6,511.28-8,987.16-3,995.36

Finding the Fourth Proportional to 6,511.28, 8,987.16 and 3,995.36

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Solution

The fourth proportional to 6,511.28, 8,987.16 and 3,995.36 is: 5,514.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.28 : 8,987.16 = 3,995.36 : x
  2. Step 2: Convert to fraction form
    6,511.28/8,987.16 = 3,995.36/x
  3. Step 3: Cross multiply
    6,511.28x = 8,987.16 × 3,995.36
  4. Step 4: Simplify right side
    6,511.28x = 35,906,939.58
  5. Step 5: Solve for x
    x = 35,906,939.58/6,511.28
  6. Step 6: Final answer
    x = 5,514.57

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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.