Home / 8,478.21-11,697.51-4,940.74

Finding the Fourth Proportional to 8,478.21, 11,697.51 and 4,940.74

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Solution

The fourth proportional to 8,478.21, 11,697.51 and 4,940.74 is: 6,816.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.21 : 11,697.51 = 4,940.74 : x
  2. Step 2: Convert to fraction form
    8,478.21/11,697.51 = 4,940.74/x
  3. Step 3: Cross multiply
    8,478.21x = 11,697.51 × 4,940.74
  4. Step 4: Simplify right side
    8,478.21x = 57,794,355.56
  5. Step 5: Solve for x
    x = 57,794,355.56/8,478.21
  6. Step 6: Final answer
    x = 6,816.81

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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.