Home / 7,091.65-10,639.20-2,161.38

Finding the Fourth Proportional to 7,091.65, 10,639.20 and 2,161.38

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Solution

The fourth proportional to 7,091.65, 10,639.20 and 2,161.38 is: 3,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.65 : 10,639.20 = 2,161.38 : x
  2. Step 2: Convert to fraction form
    7,091.65/10,639.20 = 2,161.38/x
  3. Step 3: Cross multiply
    7,091.65x = 10,639.20 × 2,161.38
  4. Step 4: Simplify right side
    7,091.65x = 22,995,354.10
  5. Step 5: Solve for x
    x = 22,995,354.10/7,091.65
  6. Step 6: Final answer
    x = 3,242.60

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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.