Home / 5,238.72-7,860.84-3,479.40

Finding the Fourth Proportional to 5,238.72, 7,860.84 and 3,479.40

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Solution

The fourth proportional to 5,238.72, 7,860.84 and 3,479.40 is: 5,220.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.72 : 7,860.84 = 3,479.40 : x
  2. Step 2: Convert to fraction form
    5,238.72/7,860.84 = 3,479.40/x
  3. Step 3: Cross multiply
    5,238.72x = 7,860.84 × 3,479.40
  4. Step 4: Simplify right side
    5,238.72x = 27,351,006.70
  5. Step 5: Solve for x
    x = 27,351,006.70/5,238.72
  6. Step 6: Final answer
    x = 5,220.93

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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.