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Finding the Fourth Proportional to 1,411.48, 1,947.99 and 873.19

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Solution

The fourth proportional to 1,411.48, 1,947.99 and 873.19 is: 1,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.48 : 1,947.99 = 873.19 : x
  2. Step 2: Convert to fraction form
    1,411.48/1,947.99 = 873.19/x
  3. Step 3: Cross multiply
    1,411.48x = 1,947.99 × 873.19
  4. Step 4: Simplify right side
    1,411.48x = 1,700,965.39
  5. Step 5: Solve for x
    x = 1,700,965.39/1,411.48
  6. Step 6: Final answer
    x = 1,205.09

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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.