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Finding the Fourth Proportional to 1,502.46, 2,072.94 and 872.82

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Solution

The fourth proportional to 1,502.46, 2,072.94 and 872.82 is: 1,204.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.46 : 2,072.94 = 872.82 : x
  2. Step 2: Convert to fraction form
    1,502.46/2,072.94 = 872.82/x
  3. Step 3: Cross multiply
    1,502.46x = 2,072.94 × 872.82
  4. Step 4: Simplify right side
    1,502.46x = 1,809,303.49
  5. Step 5: Solve for x
    x = 1,809,303.49/1,502.46
  6. Step 6: Final answer
    x = 1,204.23

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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.