Home / 2,008.39-2,772.21-1,378.69

Finding the Fourth Proportional to 2,008.39, 2,772.21 and 1,378.69

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Solution

The fourth proportional to 2,008.39, 2,772.21 and 1,378.69 is: 1,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.39 : 2,772.21 = 1,378.69 : x
  2. Step 2: Convert to fraction form
    2,008.39/2,772.21 = 1,378.69/x
  3. Step 3: Cross multiply
    2,008.39x = 2,772.21 × 1,378.69
  4. Step 4: Simplify right side
    2,008.39x = 3,822,018.20
  5. Step 5: Solve for x
    x = 3,822,018.20/2,008.39
  6. Step 6: Final answer
    x = 1,903.03

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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.