Home / 3,690.45-5,092.66-2,118.51

Finding the Fourth Proportional to 3,690.45, 5,092.66 and 2,118.51

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Solution

The fourth proportional to 3,690.45, 5,092.66 and 2,118.51 is: 2,923.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.45 : 5,092.66 = 2,118.51 : x
  2. Step 2: Convert to fraction form
    3,690.45/5,092.66 = 2,118.51/x
  3. Step 3: Cross multiply
    3,690.45x = 5,092.66 × 2,118.51
  4. Step 4: Simplify right side
    3,690.45x = 10,788,851.14
  5. Step 5: Solve for x
    x = 10,788,851.14/3,690.45
  6. Step 6: Final answer
    x = 2,923.45

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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.