Home / 1,944.80-2,683.20-1,385.36

Finding the Fourth Proportional to 1,944.80, 2,683.20 and 1,385.36

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Solution

The fourth proportional to 1,944.80, 2,683.20 and 1,385.36 is: 1,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.80 : 2,683.20 = 1,385.36 : x
  2. Step 2: Convert to fraction form
    1,944.80/2,683.20 = 1,385.36/x
  3. Step 3: Cross multiply
    1,944.80x = 2,683.20 × 1,385.36
  4. Step 4: Simplify right side
    1,944.80x = 3,717,197.95
  5. Step 5: Solve for x
    x = 3,717,197.95/1,944.80
  6. Step 6: Final answer
    x = 1,911.35

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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.