Home / 3,479.73-5,220.36-1,288.45

Finding the Fourth Proportional to 3,479.73, 5,220.36 and 1,288.45

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Solution

The fourth proportional to 3,479.73, 5,220.36 and 1,288.45 is: 1,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.73 : 5,220.36 = 1,288.45 : x
  2. Step 2: Convert to fraction form
    3,479.73/5,220.36 = 1,288.45/x
  3. Step 3: Cross multiply
    3,479.73x = 5,220.36 × 1,288.45
  4. Step 4: Simplify right side
    3,479.73x = 6,726,172.84
  5. Step 5: Solve for x
    x = 6,726,172.84/3,479.73
  6. Step 6: Final answer
    x = 1,932.96

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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.