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Finding the Fourth Proportional to 3,591.90, 4,956.93 and 2,100.90

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Solution

The fourth proportional to 3,591.90, 4,956.93 and 2,100.90 is: 2,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.90 : 4,956.93 = 2,100.90 : x
  2. Step 2: Convert to fraction form
    3,591.90/4,956.93 = 2,100.90/x
  3. Step 3: Cross multiply
    3,591.90x = 4,956.93 × 2,100.90
  4. Step 4: Simplify right side
    3,591.90x = 10,414,014.24
  5. Step 5: Solve for x
    x = 10,414,014.24/3,591.90
  6. Step 6: Final answer
    x = 2,899.31

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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.