Home / 2,910.33-4,017.20-2,164.05

Finding the Fourth Proportional to 2,910.33, 4,017.20 and 2,164.05

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Solution

The fourth proportional to 2,910.33, 4,017.20 and 2,164.05 is: 2,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.33 : 4,017.20 = 2,164.05 : x
  2. Step 2: Convert to fraction form
    2,910.33/4,017.20 = 2,164.05/x
  3. Step 3: Cross multiply
    2,910.33x = 4,017.20 × 2,164.05
  4. Step 4: Simplify right side
    2,910.33x = 8,693,410.84
  5. Step 5: Solve for x
    x = 8,693,410.84/2,910.33
  6. Step 6: Final answer
    x = 2,987.09

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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.