Home / 3,900.61-5,382.84-2,222.17

Finding the Fourth Proportional to 3,900.61, 5,382.84 and 2,222.17

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Solution

The fourth proportional to 3,900.61, 5,382.84 and 2,222.17 is: 3,066.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.61 : 5,382.84 = 2,222.17 : x
  2. Step 2: Convert to fraction form
    3,900.61/5,382.84 = 2,222.17/x
  3. Step 3: Cross multiply
    3,900.61x = 5,382.84 × 2,222.17
  4. Step 4: Simplify right side
    3,900.61x = 11,961,547.54
  5. Step 5: Solve for x
    x = 11,961,547.54/3,900.61
  6. Step 6: Final answer
    x = 3,066.59

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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.