Home / 6,785.20-9,362.16-3,989.20

Finding the Fourth Proportional to 6,785.20, 9,362.16 and 3,989.20

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Solution

The fourth proportional to 6,785.20, 9,362.16 and 3,989.20 is: 5,504.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,785.20 : 9,362.16 = 3,989.20 : x
  2. Step 2: Convert to fraction form
    6,785.20/9,362.16 = 3,989.20/x
  3. Step 3: Cross multiply
    6,785.20x = 9,362.16 × 3,989.20
  4. Step 4: Simplify right side
    6,785.20x = 37,347,528.67
  5. Step 5: Solve for x
    x = 37,347,528.67/6,785.20
  6. Step 6: Final answer
    x = 5,504.26

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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.