Home / 3,120.60-4,304.52-2,280.30

Finding the Fourth Proportional to 3,120.60, 4,304.52 and 2,280.30

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Solution

The fourth proportional to 3,120.60, 4,304.52 and 2,280.30 is: 3,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.60 : 4,304.52 = 2,280.30 : x
  2. Step 2: Convert to fraction form
    3,120.60/4,304.52 = 2,280.30/x
  3. Step 3: Cross multiply
    3,120.60x = 4,304.52 × 2,280.30
  4. Step 4: Simplify right side
    3,120.60x = 9,815,596.96
  5. Step 5: Solve for x
    x = 9,815,596.96/3,120.60
  6. Step 6: Final answer
    x = 3,145.42

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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.