Home / 7,185.79-10,775.20-2,505.69

Finding the Fourth Proportional to 7,185.79, 10,775.20 and 2,505.69

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Solution

The fourth proportional to 7,185.79, 10,775.20 and 2,505.69 is: 3,757.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.79 : 10,775.20 = 2,505.69 : x
  2. Step 2: Convert to fraction form
    7,185.79/10,775.20 = 2,505.69/x
  3. Step 3: Cross multiply
    7,185.79x = 10,775.20 × 2,505.69
  4. Step 4: Simplify right side
    7,185.79x = 26,999,310.89
  5. Step 5: Solve for x
    x = 26,999,310.89/7,185.79
  6. Step 6: Final answer
    x = 3,757.32

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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.