Home / 7,727.28-11,563.22-6,690.86

Finding the Fourth Proportional to 7,727.28, 11,563.22 and 6,690.86

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Solution

The fourth proportional to 7,727.28, 11,563.22 and 6,690.86 is: 10,012.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,727.28 : 11,563.22 = 6,690.86 : x
  2. Step 2: Convert to fraction form
    7,727.28/11,563.22 = 6,690.86/x
  3. Step 3: Cross multiply
    7,727.28x = 11,563.22 × 6,690.86
  4. Step 4: Simplify right side
    7,727.28x = 77,367,886.17
  5. Step 5: Solve for x
    x = 77,367,886.17/7,727.28
  6. Step 6: Final answer
    x = 10,012.31

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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.