Home / 6,665.20-9,997.80-4,073.20

Finding the Fourth Proportional to 6,665.20, 9,997.80 and 4,073.20

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Solution

The fourth proportional to 6,665.20, 9,997.80 and 4,073.20 is: 6,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.20 : 9,997.80 = 4,073.20 : x
  2. Step 2: Convert to fraction form
    6,665.20/9,997.80 = 4,073.20/x
  3. Step 3: Cross multiply
    6,665.20x = 9,997.80 × 4,073.20
  4. Step 4: Simplify right side
    6,665.20x = 40,723,038.96
  5. Step 5: Solve for x
    x = 40,723,038.96/6,665.20
  6. Step 6: Final answer
    x = 6,109.80

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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.