Home / 7,778.74-11,664.60-2,230.81

Finding the Fourth Proportional to 7,778.74, 11,664.60 and 2,230.81

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Solution

The fourth proportional to 7,778.74, 11,664.60 and 2,230.81 is: 3,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.74 : 11,664.60 = 2,230.81 : x
  2. Step 2: Convert to fraction form
    7,778.74/11,664.60 = 2,230.81/x
  3. Step 3: Cross multiply
    7,778.74x = 11,664.60 × 2,230.81
  4. Step 4: Simplify right side
    7,778.74x = 26,021,506.33
  5. Step 5: Solve for x
    x = 26,021,506.33/7,778.74
  6. Step 6: Final answer
    x = 3,345.21

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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.