Home / 7,091.28-9,785.56-4,106.90

Finding the Fourth Proportional to 7,091.28, 9,785.56 and 4,106.90

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Solution

The fourth proportional to 7,091.28, 9,785.56 and 4,106.90 is: 5,667.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.28 : 9,785.56 = 4,106.90 : x
  2. Step 2: Convert to fraction form
    7,091.28/9,785.56 = 4,106.90/x
  3. Step 3: Cross multiply
    7,091.28x = 9,785.56 × 4,106.90
  4. Step 4: Simplify right side
    7,091.28x = 40,188,316.36
  5. Step 5: Solve for x
    x = 40,188,316.36/7,091.28
  6. Step 6: Final answer
    x = 5,667.29

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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.