Home / 5,919.20-8,878.80-5,631.20

Finding the Fourth Proportional to 5,919.20, 8,878.80 and 5,631.20

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Solution

The fourth proportional to 5,919.20, 8,878.80 and 5,631.20 is: 8,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,919.20 : 8,878.80 = 5,631.20 : x
  2. Step 2: Convert to fraction form
    5,919.20/8,878.80 = 5,631.20/x
  3. Step 3: Cross multiply
    5,919.20x = 8,878.80 × 5,631.20
  4. Step 4: Simplify right side
    5,919.20x = 49,998,298.56
  5. Step 5: Solve for x
    x = 49,998,298.56/5,919.20
  6. Step 6: Final answer
    x = 8,446.80

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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.