Home / 6,429.78-8,873.15-3,777.23

Finding the Fourth Proportional to 6,429.78, 8,873.15 and 3,777.23

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Solution

The fourth proportional to 6,429.78, 8,873.15 and 3,777.23 is: 5,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.78 : 8,873.15 = 3,777.23 : x
  2. Step 2: Convert to fraction form
    6,429.78/8,873.15 = 3,777.23/x
  3. Step 3: Cross multiply
    6,429.78x = 8,873.15 × 3,777.23
  4. Step 4: Simplify right side
    6,429.78x = 33,515,931.67
  5. Step 5: Solve for x
    x = 33,515,931.67/6,429.78
  6. Step 6: Final answer
    x = 5,212.61

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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.