Home / 2,107.18-2,907.12-1,267.58

Finding the Fourth Proportional to 2,107.18, 2,907.12 and 1,267.58

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Solution

The fourth proportional to 2,107.18, 2,907.12 and 1,267.58 is: 1,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.18 : 2,907.12 = 1,267.58 : x
  2. Step 2: Convert to fraction form
    2,107.18/2,907.12 = 1,267.58/x
  3. Step 3: Cross multiply
    2,107.18x = 2,907.12 × 1,267.58
  4. Step 4: Simplify right side
    2,107.18x = 3,685,007.17
  5. Step 5: Solve for x
    x = 3,685,007.17/2,107.18
  6. Step 6: Final answer
    x = 1,748.79

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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.