Home / 3,628.81-5,007.69-2,116.66

Finding the Fourth Proportional to 3,628.81, 5,007.69 and 2,116.66

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Solution

The fourth proportional to 3,628.81, 5,007.69 and 2,116.66 is: 2,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.81 : 5,007.69 = 2,116.66 : x
  2. Step 2: Convert to fraction form
    3,628.81/5,007.69 = 2,116.66/x
  3. Step 3: Cross multiply
    3,628.81x = 5,007.69 × 2,116.66
  4. Step 4: Simplify right side
    3,628.81x = 10,599,577.12
  5. Step 5: Solve for x
    x = 10,599,577.12/3,628.81
  6. Step 6: Final answer
    x = 2,920.95

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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.