Home / 6,686.15-9,221.90-5,629.55

Finding the Fourth Proportional to 6,686.15, 9,221.90 and 5,629.55

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Solution

The fourth proportional to 6,686.15, 9,221.90 and 5,629.55 is: 7,764.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.15 : 9,221.90 = 5,629.55 : x
  2. Step 2: Convert to fraction form
    6,686.15/9,221.90 = 5,629.55/x
  3. Step 3: Cross multiply
    6,686.15x = 9,221.90 × 5,629.55
  4. Step 4: Simplify right side
    6,686.15x = 51,915,072.89
  5. Step 5: Solve for x
    x = 51,915,072.89/6,686.15
  6. Step 6: Final answer
    x = 7,764.57

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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.