Home / 2,071.80-3,107.70-1,150.20

Finding the Fourth Proportional to 2,071.80, 3,107.70 and 1,150.20

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Solution

The fourth proportional to 2,071.80, 3,107.70 and 1,150.20 is: 1,725.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.80 : 3,107.70 = 1,150.20 : x
  2. Step 2: Convert to fraction form
    2,071.80/3,107.70 = 1,150.20/x
  3. Step 3: Cross multiply
    2,071.80x = 3,107.70 × 1,150.20
  4. Step 4: Simplify right side
    2,071.80x = 3,574,476.54
  5. Step 5: Solve for x
    x = 3,574,476.54/2,071.80
  6. Step 6: Final answer
    x = 1,725.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.