Home / 6,520.08-9,780.48-2,138.16

Finding the Fourth Proportional to 6,520.08, 9,780.48 and 2,138.16

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Solution

The fourth proportional to 6,520.08, 9,780.48 and 2,138.16 is: 3,207.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.08 : 9,780.48 = 2,138.16 : x
  2. Step 2: Convert to fraction form
    6,520.08/9,780.48 = 2,138.16/x
  3. Step 3: Cross multiply
    6,520.08x = 9,780.48 × 2,138.16
  4. Step 4: Simplify right side
    6,520.08x = 20,912,231.12
  5. Step 5: Solve for x
    x = 20,912,231.12/6,520.08
  6. Step 6: Final answer
    x = 3,207.36

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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.