Home / 3,481.56-5,220.93-1,290.47

Finding the Fourth Proportional to 3,481.56, 5,220.93 and 1,290.47

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Solution

The fourth proportional to 3,481.56, 5,220.93 and 1,290.47 is: 1,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.56 : 5,220.93 = 1,290.47 : x
  2. Step 2: Convert to fraction form
    3,481.56/5,220.93 = 1,290.47/x
  3. Step 3: Cross multiply
    3,481.56x = 5,220.93 × 1,290.47
  4. Step 4: Simplify right side
    3,481.56x = 6,737,432.27
  5. Step 5: Solve for x
    x = 6,737,432.27/3,481.56
  6. Step 6: Final answer
    x = 1,935.18

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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.