Home / 2,820.60-4,230.90-2,796.30

Finding the Fourth Proportional to 2,820.60, 4,230.90 and 2,796.30

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Solution

The fourth proportional to 2,820.60, 4,230.90 and 2,796.30 is: 4,194.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.60 : 4,230.90 = 2,796.30 : x
  2. Step 2: Convert to fraction form
    2,820.60/4,230.90 = 2,796.30/x
  3. Step 3: Cross multiply
    2,820.60x = 4,230.90 × 2,796.30
  4. Step 4: Simplify right side
    2,820.60x = 11,830,865.67
  5. Step 5: Solve for x
    x = 11,830,865.67/2,820.60
  6. Step 6: Final answer
    x = 4,194.45

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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.