Home / 3,309-4,566.48-1,912.20

Finding the Fourth Proportional to 3,309, 4,566.48 and 1,912.20

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Solution

The fourth proportional to 3,309, 4,566.48 and 1,912.20 is: 2,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309 : 4,566.48 = 1,912.20 : x
  2. Step 2: Convert to fraction form
    3,309/4,566.48 = 1,912.20/x
  3. Step 3: Cross multiply
    3,309x = 4,566.48 × 1,912.20
  4. Step 4: Simplify right side
    3,309x = 8,732,023.06
  5. Step 5: Solve for x
    x = 8,732,023.06/3,309
  6. Step 6: Final answer
    x = 2,638.87

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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.