Home / 3,478.32-5,219.51-1,288.58

Finding the Fourth Proportional to 3,478.32, 5,219.51 and 1,288.58

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Solution

The fourth proportional to 3,478.32, 5,219.51 and 1,288.58 is: 1,933.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.32 : 5,219.51 = 1,288.58 : x
  2. Step 2: Convert to fraction form
    3,478.32/5,219.51 = 1,288.58/x
  3. Step 3: Cross multiply
    3,478.32x = 5,219.51 × 1,288.58
  4. Step 4: Simplify right side
    3,478.32x = 6,725,723.66
  5. Step 5: Solve for x
    x = 6,725,723.66/3,478.32
  6. Step 6: Final answer
    x = 1,933.61

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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.