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Finding the Fourth Proportional to 3,309.71, 4,961.11 and 2,430.91

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Solution

The fourth proportional to 3,309.71, 4,961.11 and 2,430.91 is: 3,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.71 : 4,961.11 = 2,430.91 : x
  2. Step 2: Convert to fraction form
    3,309.71/4,961.11 = 2,430.91/x
  3. Step 3: Cross multiply
    3,309.71x = 4,961.11 × 2,430.91
  4. Step 4: Simplify right side
    3,309.71x = 12,059,993.43
  5. Step 5: Solve for x
    x = 12,059,993.43/3,309.71
  6. Step 6: Final answer
    x = 3,643.82

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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.