Home / 7,091.22-9,785.80-3,904.45

Finding the Fourth Proportional to 7,091.22, 9,785.80 and 3,904.45

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Solution

The fourth proportional to 7,091.22, 9,785.80 and 3,904.45 is: 5,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.22 : 9,785.80 = 3,904.45 : x
  2. Step 2: Convert to fraction form
    7,091.22/9,785.80 = 3,904.45/x
  3. Step 3: Cross multiply
    7,091.22x = 9,785.80 × 3,904.45
  4. Step 4: Simplify right side
    7,091.22x = 38,208,158.25
  5. Step 5: Solve for x
    x = 38,208,158.25/7,091.22
  6. Step 6: Final answer
    x = 5,388.10

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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.