Home / 7,091.94-10,639.61-2,161.28

Finding the Fourth Proportional to 7,091.94, 10,639.61 and 2,161.28

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Solution

The fourth proportional to 7,091.94, 10,639.61 and 2,161.28 is: 3,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.94 : 10,639.61 = 2,161.28 : x
  2. Step 2: Convert to fraction form
    7,091.94/10,639.61 = 2,161.28/x
  3. Step 3: Cross multiply
    7,091.94x = 10,639.61 × 2,161.28
  4. Step 4: Simplify right side
    7,091.94x = 22,995,172.46
  5. Step 5: Solve for x
    x = 22,995,172.46/7,091.94
  6. Step 6: Final answer
    x = 3,242.44

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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.