Home / 2,812.60-4,218.90-2,630.35

Finding the Fourth Proportional to 2,812.60, 4,218.90 and 2,630.35

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Solution

The fourth proportional to 2,812.60, 4,218.90 and 2,630.35 is: 3,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.60 : 4,218.90 = 2,630.35 : x
  2. Step 2: Convert to fraction form
    2,812.60/4,218.90 = 2,630.35/x
  3. Step 3: Cross multiply
    2,812.60x = 4,218.90 × 2,630.35
  4. Step 4: Simplify right side
    2,812.60x = 11,097,183.62
  5. Step 5: Solve for x
    x = 11,097,183.62/2,812.60
  6. Step 6: Final answer
    x = 3,945.53

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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.