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Finding the Fourth Proportional to 1,645.67, 2,270.82 and 937.51

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Solution

The fourth proportional to 1,645.67, 2,270.82 and 937.51 is: 1,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.67 : 2,270.82 = 937.51 : x
  2. Step 2: Convert to fraction form
    1,645.67/2,270.82 = 937.51/x
  3. Step 3: Cross multiply
    1,645.67x = 2,270.82 × 937.51
  4. Step 4: Simplify right side
    1,645.67x = 2,128,924.48
  5. Step 5: Solve for x
    x = 2,128,924.48/1,645.67
  6. Step 6: Final answer
    x = 1,293.65

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1.5x scale

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.