Home / 2,107.55-2,907.29-1,223.03

Finding the Fourth Proportional to 2,107.55, 2,907.29 and 1,223.03

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Solution

The fourth proportional to 2,107.55, 2,907.29 and 1,223.03 is: 1,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.55 : 2,907.29 = 1,223.03 : x
  2. Step 2: Convert to fraction form
    2,107.55/2,907.29 = 1,223.03/x
  3. Step 3: Cross multiply
    2,107.55x = 2,907.29 × 1,223.03
  4. Step 4: Simplify right side
    2,107.55x = 3,555,713.21
  5. Step 5: Solve for x
    x = 3,555,713.21/2,107.55
  6. Step 6: Final answer
    x = 1,687.13

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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.