Home / 2,984.10-4,115.84-1,921.17

Finding the Fourth Proportional to 2,984.10, 4,115.84 and 1,921.17

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Solution

The fourth proportional to 2,984.10, 4,115.84 and 1,921.17 is: 2,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.10 : 4,115.84 = 1,921.17 : x
  2. Step 2: Convert to fraction form
    2,984.10/4,115.84 = 1,921.17/x
  3. Step 3: Cross multiply
    2,984.10x = 4,115.84 × 1,921.17
  4. Step 4: Simplify right side
    2,984.10x = 7,907,228.33
  5. Step 5: Solve for x
    x = 7,907,228.33/2,984.10
  6. Step 6: Final answer
    x = 2,649.79

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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.