Home / 1,353.30-1,863.36-1,072.63

Finding the Fourth Proportional to 1,353.30, 1,863.36 and 1,072.63

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Solution

The fourth proportional to 1,353.30, 1,863.36 and 1,072.63 is: 1,476.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.30 : 1,863.36 = 1,072.63 : x
  2. Step 2: Convert to fraction form
    1,353.30/1,863.36 = 1,072.63/x
  3. Step 3: Cross multiply
    1,353.30x = 1,863.36 × 1,072.63
  4. Step 4: Simplify right side
    1,353.30x = 1,998,695.84
  5. Step 5: Solve for x
    x = 1,998,695.84/1,353.30
  6. Step 6: Final answer
    x = 1,476.91

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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.