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Finding the Fourth Proportional to 3,809.88, 5,255.28 and 2,614.32

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Solution

The fourth proportional to 3,809.88, 5,255.28 and 2,614.32 is: 3,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.88 : 5,255.28 = 2,614.32 : x
  2. Step 2: Convert to fraction form
    3,809.88/5,255.28 = 2,614.32/x
  3. Step 3: Cross multiply
    3,809.88x = 5,255.28 × 2,614.32
  4. Step 4: Simplify right side
    3,809.88x = 13,738,983.61
  5. Step 5: Solve for x
    x = 13,738,983.61/3,809.88
  6. Step 6: Final answer
    x = 3,606.15

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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.