Home / 4,339.90-5,990.46-3,220.48

Finding the Fourth Proportional to 4,339.90, 5,990.46 and 3,220.48

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Solution

The fourth proportional to 4,339.90, 5,990.46 and 3,220.48 is: 4,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,339.90 : 5,990.46 = 3,220.48 : x
  2. Step 2: Convert to fraction form
    4,339.90/5,990.46 = 3,220.48/x
  3. Step 3: Cross multiply
    4,339.90x = 5,990.46 × 3,220.48
  4. Step 4: Simplify right side
    4,339.90x = 19,292,156.62
  5. Step 5: Solve for x
    x = 19,292,156.62/4,339.90
  6. Step 6: Final answer
    x = 4,445.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.