Home / 2,830.39-3,903.52-2,305.51

Finding the Fourth Proportional to 2,830.39, 3,903.52 and 2,305.51

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Solution

The fourth proportional to 2,830.39, 3,903.52 and 2,305.51 is: 3,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.39 : 3,903.52 = 2,305.51 : x
  2. Step 2: Convert to fraction form
    2,830.39/3,903.52 = 2,305.51/x
  3. Step 3: Cross multiply
    2,830.39x = 3,903.52 × 2,305.51
  4. Step 4: Simplify right side
    2,830.39x = 8,999,604.40
  5. Step 5: Solve for x
    x = 8,999,604.40/2,830.39
  6. Step 6: Final answer
    x = 3,179.63

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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.