Home / 1,645.16-2,270.25-936.99

Finding the Fourth Proportional to 1,645.16, 2,270.25 and 936.99

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Solution

The fourth proportional to 1,645.16, 2,270.25 and 936.99 is: 1,293.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.16 : 2,270.25 = 936.99 : x
  2. Step 2: Convert to fraction form
    1,645.16/2,270.25 = 936.99/x
  3. Step 3: Cross multiply
    1,645.16x = 2,270.25 × 936.99
  4. Step 4: Simplify right side
    1,645.16x = 2,127,201.55
  5. Step 5: Solve for x
    x = 2,127,201.55/1,645.16
  6. Step 6: Final answer
    x = 1,293.01

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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.