Home / 1,192.36-1,787.36-461.40

Finding the Fourth Proportional to 1,192.36, 1,787.36 and 461.40

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Solution

The fourth proportional to 1,192.36, 1,787.36 and 461.40 is: 691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.36 : 1,787.36 = 461.40 : x
  2. Step 2: Convert to fraction form
    1,192.36/1,787.36 = 461.40/x
  3. Step 3: Cross multiply
    1,192.36x = 1,787.36 × 461.40
  4. Step 4: Simplify right side
    1,192.36x = 824,687.90
  5. Step 5: Solve for x
    x = 824,687.90/1,192.36
  6. Step 6: Final answer
    x = 691.64

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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.