Home / 1,385.70-2,076.80-1,092.04

Finding the Fourth Proportional to 1,385.70, 2,076.80 and 1,092.04

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Solution

The fourth proportional to 1,385.70, 2,076.80 and 1,092.04 is: 1,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.70 : 2,076.80 = 1,092.04 : x
  2. Step 2: Convert to fraction form
    1,385.70/2,076.80 = 1,092.04/x
  3. Step 3: Cross multiply
    1,385.70x = 2,076.80 × 1,092.04
  4. Step 4: Simplify right side
    1,385.70x = 2,267,948.67
  5. Step 5: Solve for x
    x = 2,267,948.67/1,385.70
  6. Step 6: Final answer
    x = 1,636.68

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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.