Home / 2,107.12-2,907.72-1,175.44

Finding the Fourth Proportional to 2,107.12, 2,907.72 and 1,175.44

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Solution

The fourth proportional to 2,107.12, 2,907.72 and 1,175.44 is: 1,622.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.12 : 2,907.72 = 1,175.44 : x
  2. Step 2: Convert to fraction form
    2,107.12/2,907.72 = 1,175.44/x
  3. Step 3: Cross multiply
    2,107.12x = 2,907.72 × 1,175.44
  4. Step 4: Simplify right side
    2,107.12x = 3,417,850.40
  5. Step 5: Solve for x
    x = 3,417,850.40/2,107.12
  6. Step 6: Final answer
    x = 1,622.05

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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.