Home / 2,107.22-2,907.11-1,309.98

Finding the Fourth Proportional to 2,107.22, 2,907.11 and 1,309.98

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Solution

The fourth proportional to 2,107.22, 2,907.11 and 1,309.98 is: 1,807.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.22 : 2,907.11 = 1,309.98 : x
  2. Step 2: Convert to fraction form
    2,107.22/2,907.11 = 1,309.98/x
  3. Step 3: Cross multiply
    2,107.22x = 2,907.11 × 1,309.98
  4. Step 4: Simplify right side
    2,107.22x = 3,808,238.15
  5. Step 5: Solve for x
    x = 3,808,238.15/2,107.22
  6. Step 6: Final answer
    x = 1,807.24

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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.