Home / 1,013.39-1,512.75-890.37

Finding the Fourth Proportional to 1,013.39, 1,512.75 and 890.37

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Solution

The fourth proportional to 1,013.39, 1,512.75 and 890.37 is: 1,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.39 : 1,512.75 = 890.37 : x
  2. Step 2: Convert to fraction form
    1,013.39/1,512.75 = 890.37/x
  3. Step 3: Cross multiply
    1,013.39x = 1,512.75 × 890.37
  4. Step 4: Simplify right side
    1,013.39x = 1,346,903.80
  5. Step 5: Solve for x
    x = 1,346,903.80/1,013.39
  6. Step 6: Final answer
    x = 1,329.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.