Home / 7,722.20-10,656.60-4,185.38

Finding the Fourth Proportional to 7,722.20, 10,656.60 and 4,185.38

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Solution

The fourth proportional to 7,722.20, 10,656.60 and 4,185.38 is: 5,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,722.20 : 10,656.60 = 4,185.38 : x
  2. Step 2: Convert to fraction form
    7,722.20/10,656.60 = 4,185.38/x
  3. Step 3: Cross multiply
    7,722.20x = 10,656.60 × 4,185.38
  4. Step 4: Simplify right side
    7,722.20x = 44,601,920.51
  5. Step 5: Solve for x
    x = 44,601,920.51/7,722.20
  6. Step 6: Final answer
    x = 5,775.80

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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.