Home / 3,009.60-4,173.20-2,911.20

Finding the Fourth Proportional to 3,009.60, 4,173.20 and 2,911.20

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Solution

The fourth proportional to 3,009.60, 4,173.20 and 2,911.20 is: 4,036.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.60 : 4,173.20 = 2,911.20 : x
  2. Step 2: Convert to fraction form
    3,009.60/4,173.20 = 2,911.20/x
  3. Step 3: Cross multiply
    3,009.60x = 4,173.20 × 2,911.20
  4. Step 4: Simplify right side
    3,009.60x = 12,149,019.84
  5. Step 5: Solve for x
    x = 12,149,019.84/3,009.60
  6. Step 6: Final answer
    x = 4,036.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.