Home / 7,990.56-11,966.40-5,518.80

Finding the Fourth Proportional to 7,990.56, 11,966.40 and 5,518.80

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Solution

The fourth proportional to 7,990.56, 11,966.40 and 5,518.80 is: 8,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.56 : 11,966.40 = 5,518.80 : x
  2. Step 2: Convert to fraction form
    7,990.56/11,966.40 = 5,518.80/x
  3. Step 3: Cross multiply
    7,990.56x = 11,966.40 × 5,518.80
  4. Step 4: Simplify right side
    7,990.56x = 66,040,168.32
  5. Step 5: Solve for x
    x = 66,040,168.32/7,990.56
  6. Step 6: Final answer
    x = 8,264.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.