Home / 7,091.79-10,632.75-3,140.90

Finding the Fourth Proportional to 7,091.79, 10,632.75 and 3,140.90

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Solution

The fourth proportional to 7,091.79, 10,632.75 and 3,140.90 is: 4,709.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.79 : 10,632.75 = 3,140.90 : x
  2. Step 2: Convert to fraction form
    7,091.79/10,632.75 = 3,140.90/x
  3. Step 3: Cross multiply
    7,091.79x = 10,632.75 × 3,140.90
  4. Step 4: Simplify right side
    7,091.79x = 33,396,431.06
  5. Step 5: Solve for x
    x = 33,396,431.06/7,091.79
  6. Step 6: Final answer
    x = 4,709.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.