Home / 5,219.91-7,830.62-1,521.66

Finding the Fourth Proportional to 5,219.91, 7,830.62 and 1,521.66

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Solution

The fourth proportional to 5,219.91, 7,830.62 and 1,521.66 is: 2,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.91 : 7,830.62 = 1,521.66 : x
  2. Step 2: Convert to fraction form
    5,219.91/7,830.62 = 1,521.66/x
  3. Step 3: Cross multiply
    5,219.91x = 7,830.62 × 1,521.66
  4. Step 4: Simplify right side
    5,219.91x = 11,915,533.62
  5. Step 5: Solve for x
    x = 11,915,533.62/5,219.91
  6. Step 6: Final answer
    x = 2,282.71

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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.