Home / 6,785.12-9,361.76-3,990.08

Finding the Fourth Proportional to 6,785.12, 9,361.76 and 3,990.08

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Solution

The fourth proportional to 6,785.12, 9,361.76 and 3,990.08 is: 5,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,785.12 : 9,361.76 = 3,990.08 : x
  2. Step 2: Convert to fraction form
    6,785.12/9,361.76 = 3,990.08/x
  3. Step 3: Cross multiply
    6,785.12x = 9,361.76 × 3,990.08
  4. Step 4: Simplify right side
    6,785.12x = 37,354,171.34
  5. Step 5: Solve for x
    x = 37,354,171.34/6,785.12
  6. Step 6: Final answer
    x = 5,505.31

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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.