Home / 7,855.32-11,778.66-3,690.48

Finding the Fourth Proportional to 7,855.32, 11,778.66 and 3,690.48

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Solution

The fourth proportional to 7,855.32, 11,778.66 and 3,690.48 is: 5,533.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.32 : 11,778.66 = 3,690.48 : x
  2. Step 2: Convert to fraction form
    7,855.32/11,778.66 = 3,690.48/x
  3. Step 3: Cross multiply
    7,855.32x = 11,778.66 × 3,690.48
  4. Step 4: Simplify right side
    7,855.32x = 43,468,909.16
  5. Step 5: Solve for x
    x = 43,468,909.16/7,855.32
  6. Step 6: Final answer
    x = 5,533.69

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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.