Home / 3,479.63-5,219.34-1,288.31

Finding the Fourth Proportional to 3,479.63, 5,219.34 and 1,288.31

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Solution

The fourth proportional to 3,479.63, 5,219.34 and 1,288.31 is: 1,932.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.63 : 5,219.34 = 1,288.31 : x
  2. Step 2: Convert to fraction form
    3,479.63/5,219.34 = 1,288.31/x
  3. Step 3: Cross multiply
    3,479.63x = 5,219.34 × 1,288.31
  4. Step 4: Simplify right side
    3,479.63x = 6,724,096.99
  5. Step 5: Solve for x
    x = 6,724,096.99/3,479.63
  6. Step 6: Final answer
    x = 1,932.42

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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.