Home / 1,536.83-2,121.65-939.46

Finding the Fourth Proportional to 1,536.83, 2,121.65 and 939.46

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Solution

The fourth proportional to 1,536.83, 2,121.65 and 939.46 is: 1,296.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.83 : 2,121.65 = 939.46 : x
  2. Step 2: Convert to fraction form
    1,536.83/2,121.65 = 939.46/x
  3. Step 3: Cross multiply
    1,536.83x = 2,121.65 × 939.46
  4. Step 4: Simplify right side
    1,536.83x = 1,993,202.35
  5. Step 5: Solve for x
    x = 1,993,202.35/1,536.83
  6. Step 6: Final answer
    x = 1,296.96

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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.