Home / 3,479.56-5,219.16-1,287.34

Finding the Fourth Proportional to 3,479.56, 5,219.16 and 1,287.34

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Solution

The fourth proportional to 3,479.56, 5,219.16 and 1,287.34 is: 1,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.56 : 5,219.16 = 1,287.34 : x
  2. Step 2: Convert to fraction form
    3,479.56/5,219.16 = 1,287.34/x
  3. Step 3: Cross multiply
    3,479.56x = 5,219.16 × 1,287.34
  4. Step 4: Simplify right side
    3,479.56x = 6,718,833.43
  5. Step 5: Solve for x
    x = 6,718,833.43/3,479.56
  6. Step 6: Final answer
    x = 1,930.94

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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.