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Finding the Fourth Proportional to 2,695.05, 3,721.23 and 2,104.56

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Solution

The fourth proportional to 2,695.05, 3,721.23 and 2,104.56 is: 2,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.05 : 3,721.23 = 2,104.56 : x
  2. Step 2: Convert to fraction form
    2,695.05/3,721.23 = 2,104.56/x
  3. Step 3: Cross multiply
    2,695.05x = 3,721.23 × 2,104.56
  4. Step 4: Simplify right side
    2,695.05x = 7,831,551.81
  5. Step 5: Solve for x
    x = 7,831,551.81/2,695.05
  6. Step 6: Final answer
    x = 2,905.90

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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.