Home / 1,191.29-1,787.39-461.39

Finding the Fourth Proportional to 1,191.29, 1,787.39 and 461.39

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Solution

The fourth proportional to 1,191.29, 1,787.39 and 461.39 is: 692.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.29 : 1,787.39 = 461.39 : x
  2. Step 2: Convert to fraction form
    1,191.29/1,787.39 = 461.39/x
  3. Step 3: Cross multiply
    1,191.29x = 1,787.39 × 461.39
  4. Step 4: Simplify right side
    1,191.29x = 824,672.63
  5. Step 5: Solve for x
    x = 824,672.63/1,191.29
  6. Step 6: Final answer
    x = 692.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.