Home / 8,135.64-11,229.48-4,778.55

Finding the Fourth Proportional to 8,135.64, 11,229.48 and 4,778.55

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Solution

The fourth proportional to 8,135.64, 11,229.48 and 4,778.55 is: 6,595.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.64 : 11,229.48 = 4,778.55 : x
  2. Step 2: Convert to fraction form
    8,135.64/11,229.48 = 4,778.55/x
  3. Step 3: Cross multiply
    8,135.64x = 11,229.48 × 4,778.55
  4. Step 4: Simplify right side
    8,135.64x = 53,660,631.65
  5. Step 5: Solve for x
    x = 53,660,631.65/8,135.64
  6. Step 6: Final answer
    x = 6,595.75

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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.