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Finding the Fourth Proportional to 1,963.56, 2,698.20 and 1,569.90

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Solution

The fourth proportional to 1,963.56, 2,698.20 and 1,569.90 is: 2,157.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.56 : 2,698.20 = 1,569.90 : x
  2. Step 2: Convert to fraction form
    1,963.56/2,698.20 = 1,569.90/x
  3. Step 3: Cross multiply
    1,963.56x = 2,698.20 × 1,569.90
  4. Step 4: Simplify right side
    1,963.56x = 4,235,904.18
  5. Step 5: Solve for x
    x = 4,235,904.18/1,963.56
  6. Step 6: Final answer
    x = 2,157.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.