Home / 2,107.11-2,907-1,636.86

Finding the Fourth Proportional to 2,107.11, 2,907 and 1,636.86

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Solution

The fourth proportional to 2,107.11, 2,907 and 1,636.86 is: 2,258.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.11 : 2,907 = 1,636.86 : x
  2. Step 2: Convert to fraction form
    2,107.11/2,907 = 1,636.86/x
  3. Step 3: Cross multiply
    2,107.11x = 2,907 × 1,636.86
  4. Step 4: Simplify right side
    2,107.11x = 4,758,352.02
  5. Step 5: Solve for x
    x = 4,758,352.02/2,107.11
  6. Step 6: Final answer
    x = 2,258.24

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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.