Home / 5,660.16-8,487.68-3,321.28

Finding the Fourth Proportional to 5,660.16, 8,487.68 and 3,321.28

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Solution

The fourth proportional to 5,660.16, 8,487.68 and 3,321.28 is: 4,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,660.16 : 8,487.68 = 3,321.28 : x
  2. Step 2: Convert to fraction form
    5,660.16/8,487.68 = 3,321.28/x
  3. Step 3: Cross multiply
    5,660.16x = 8,487.68 × 3,321.28
  4. Step 4: Simplify right side
    5,660.16x = 28,189,961.83
  5. Step 5: Solve for x
    x = 28,189,961.83/5,660.16
  6. Step 6: Final answer
    x = 4,980.42

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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.