Home / 1,907.11-2,630.97-1,120.81

Finding the Fourth Proportional to 1,907.11, 2,630.97 and 1,120.81

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Solution

The fourth proportional to 1,907.11, 2,630.97 and 1,120.81 is: 1,546.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.11 : 2,630.97 = 1,120.81 : x
  2. Step 2: Convert to fraction form
    1,907.11/2,630.97 = 1,120.81/x
  3. Step 3: Cross multiply
    1,907.11x = 2,630.97 × 1,120.81
  4. Step 4: Simplify right side
    1,907.11x = 2,948,817.49
  5. Step 5: Solve for x
    x = 2,948,817.49/1,907.11
  6. Step 6: Final answer
    x = 1,546.22

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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.