Home / 5,209.74-7,181.94-3,715.05

Finding the Fourth Proportional to 5,209.74, 7,181.94 and 3,715.05

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Solution

The fourth proportional to 5,209.74, 7,181.94 and 3,715.05 is: 5,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.74 : 7,181.94 = 3,715.05 : x
  2. Step 2: Convert to fraction form
    5,209.74/7,181.94 = 3,715.05/x
  3. Step 3: Cross multiply
    5,209.74x = 7,181.94 × 3,715.05
  4. Step 4: Simplify right side
    5,209.74x = 26,681,266.20
  5. Step 5: Solve for x
    x = 26,681,266.20/5,209.74
  6. Step 6: Final answer
    x = 5,121.42

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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.