Home / 7,479.31-11,219.39-3,777.20

Finding the Fourth Proportional to 7,479.31, 11,219.39 and 3,777.20

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Solution

The fourth proportional to 7,479.31, 11,219.39 and 3,777.20 is: 5,666.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.31 : 11,219.39 = 3,777.20 : x
  2. Step 2: Convert to fraction form
    7,479.31/11,219.39 = 3,777.20/x
  3. Step 3: Cross multiply
    7,479.31x = 11,219.39 × 3,777.20
  4. Step 4: Simplify right side
    7,479.31x = 42,377,879.91
  5. Step 5: Solve for x
    x = 42,377,879.91/7,479.31
  6. Step 6: Final answer
    x = 5,666.01

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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.