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Finding the Fourth Proportional to 1,535.36, 2,118 and 945.44

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Solution

The fourth proportional to 1,535.36, 2,118 and 945.44 is: 1,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.36 : 2,118 = 945.44 : x
  2. Step 2: Convert to fraction form
    1,535.36/2,118 = 945.44/x
  3. Step 3: Cross multiply
    1,535.36x = 2,118 × 945.44
  4. Step 4: Simplify right side
    1,535.36x = 2,002,441.92
  5. Step 5: Solve for x
    x = 2,002,441.92/1,535.36
  6. Step 6: Final answer
    x = 1,304.22

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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.