Home / 7,180.23-9,900.12-6,183.78

Finding the Fourth Proportional to 7,180.23, 9,900.12 and 6,183.78

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Solution

The fourth proportional to 7,180.23, 9,900.12 and 6,183.78 is: 8,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.23 : 9,900.12 = 6,183.78 : x
  2. Step 2: Convert to fraction form
    7,180.23/9,900.12 = 6,183.78/x
  3. Step 3: Cross multiply
    7,180.23x = 9,900.12 × 6,183.78
  4. Step 4: Simplify right side
    7,180.23x = 61,220,164.05
  5. Step 5: Solve for x
    x = 61,220,164.05/7,180.23
  6. Step 6: Final answer
    x = 8,526.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.