Home / 6,511.80-8,990.36-5,016.88

Finding the Fourth Proportional to 6,511.80, 8,990.36 and 5,016.88

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Solution

The fourth proportional to 6,511.80, 8,990.36 and 5,016.88 is: 6,926.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.80 : 8,990.36 = 5,016.88 : x
  2. Step 2: Convert to fraction form
    6,511.80/8,990.36 = 5,016.88/x
  3. Step 3: Cross multiply
    6,511.80x = 8,990.36 × 5,016.88
  4. Step 4: Simplify right side
    6,511.80x = 45,103,557.28
  5. Step 5: Solve for x
    x = 45,103,557.28/6,511.80
  6. Step 6: Final answer
    x = 6,926.43

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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.