Home / 5,647.20-8,472.52-2,138.28

Finding the Fourth Proportional to 5,647.20, 8,472.52 and 2,138.28

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Solution

The fourth proportional to 5,647.20, 8,472.52 and 2,138.28 is: 3,208.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.20 : 8,472.52 = 2,138.28 : x
  2. Step 2: Convert to fraction form
    5,647.20/8,472.52 = 2,138.28/x
  3. Step 3: Cross multiply
    5,647.20x = 8,472.52 × 2,138.28
  4. Step 4: Simplify right side
    5,647.20x = 18,116,620.07
  5. Step 5: Solve for x
    x = 18,116,620.07/5,647.20
  6. Step 6: Final answer
    x = 3,208.07

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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.