Home / 5,209.68-7,181.89-3,715.01

Finding the Fourth Proportional to 5,209.68, 7,181.89 and 3,715.01

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Solution

The fourth proportional to 5,209.68, 7,181.89 and 3,715.01 is: 5,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.68 : 7,181.89 = 3,715.01 : x
  2. Step 2: Convert to fraction form
    5,209.68/7,181.89 = 3,715.01/x
  3. Step 3: Cross multiply
    5,209.68x = 7,181.89 × 3,715.01
  4. Step 4: Simplify right side
    5,209.68x = 26,680,738.68
  5. Step 5: Solve for x
    x = 26,680,738.68/5,209.68
  6. Step 6: Final answer
    x = 5,121.38

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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.