Home / 5,617.38-8,420.14-2,105.09

Finding the Fourth Proportional to 5,617.38, 8,420.14 and 2,105.09

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Solution

The fourth proportional to 5,617.38, 8,420.14 and 2,105.09 is: 3,155.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,617.38 : 8,420.14 = 2,105.09 : x
  2. Step 2: Convert to fraction form
    5,617.38/8,420.14 = 2,105.09/x
  3. Step 3: Cross multiply
    5,617.38x = 8,420.14 × 2,105.09
  4. Step 4: Simplify right side
    5,617.38x = 17,725,152.51
  5. Step 5: Solve for x
    x = 17,725,152.51/5,617.38
  6. Step 6: Final answer
    x = 3,155.41

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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.