Home / 4,219.20-6,325.20-1,621.44

Finding the Fourth Proportional to 4,219.20, 6,325.20 and 1,621.44

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Solution

The fourth proportional to 4,219.20, 6,325.20 and 1,621.44 is: 2,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.20 : 6,325.20 = 1,621.44 : x
  2. Step 2: Convert to fraction form
    4,219.20/6,325.20 = 1,621.44/x
  3. Step 3: Cross multiply
    4,219.20x = 6,325.20 × 1,621.44
  4. Step 4: Simplify right side
    4,219.20x = 10,255,932.29
  5. Step 5: Solve for x
    x = 10,255,932.29/4,219.20
  6. Step 6: Final answer
    x = 2,430.78

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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.