Home / 2,798.10-4,189.05-2,107.68

Finding the Fourth Proportional to 2,798.10, 4,189.05 and 2,107.68

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Solution

The fourth proportional to 2,798.10, 4,189.05 and 2,107.68 is: 3,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.10 : 4,189.05 = 2,107.68 : x
  2. Step 2: Convert to fraction form
    2,798.10/4,189.05 = 2,107.68/x
  3. Step 3: Cross multiply
    2,798.10x = 4,189.05 × 2,107.68
  4. Step 4: Simplify right side
    2,798.10x = 8,829,176.90
  5. Step 5: Solve for x
    x = 8,829,176.90/2,798.10
  6. Step 6: Final answer
    x = 3,155.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.