Home / 4,778.86-7,164.57-2,278.76

Finding the Fourth Proportional to 4,778.86, 7,164.57 and 2,278.76

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Solution

The fourth proportional to 4,778.86, 7,164.57 and 2,278.76 is: 3,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.86 : 7,164.57 = 2,278.76 : x
  2. Step 2: Convert to fraction form
    4,778.86/7,164.57 = 2,278.76/x
  3. Step 3: Cross multiply
    4,778.86x = 7,164.57 × 2,278.76
  4. Step 4: Simplify right side
    4,778.86x = 16,326,335.53
  5. Step 5: Solve for x
    x = 16,326,335.53/4,778.86
  6. Step 6: Final answer
    x = 3,416.37

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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.