Home / 4,919.36-7,379.68-1,997.76

Finding the Fourth Proportional to 4,919.36, 7,379.68 and 1,997.76

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Solution

The fourth proportional to 4,919.36, 7,379.68 and 1,997.76 is: 2,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.36 : 7,379.68 = 1,997.76 : x
  2. Step 2: Convert to fraction form
    4,919.36/7,379.68 = 1,997.76/x
  3. Step 3: Cross multiply
    4,919.36x = 7,379.68 × 1,997.76
  4. Step 4: Simplify right side
    4,919.36x = 14,742,829.52
  5. Step 5: Solve for x
    x = 14,742,829.52/4,919.36
  6. Step 6: Final answer
    x = 2,996.90

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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.