Home / 2,305.06-3,180.78-1,310.38

Finding the Fourth Proportional to 2,305.06, 3,180.78 and 1,310.38

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Solution

The fourth proportional to 2,305.06, 3,180.78 and 1,310.38 is: 1,808.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.06 : 3,180.78 = 1,310.38 : x
  2. Step 2: Convert to fraction form
    2,305.06/3,180.78 = 1,310.38/x
  3. Step 3: Cross multiply
    2,305.06x = 3,180.78 × 1,310.38
  4. Step 4: Simplify right side
    2,305.06x = 4,168,030.50
  5. Step 5: Solve for x
    x = 4,168,030.50/2,305.06
  6. Step 6: Final answer
    x = 1,808.21

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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.