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Finding the Fourth Proportional to 2,910.88, 4,018.44 and 1,984.24

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Solution

The fourth proportional to 2,910.88, 4,018.44 and 1,984.24 is: 2,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.88 : 4,018.44 = 1,984.24 : x
  2. Step 2: Convert to fraction form
    2,910.88/4,018.44 = 1,984.24/x
  3. Step 3: Cross multiply
    2,910.88x = 4,018.44 × 1,984.24
  4. Step 4: Simplify right side
    2,910.88x = 7,973,549.39
  5. Step 5: Solve for x
    x = 7,973,549.39/2,910.88
  6. Step 6: Final answer
    x = 2,739.22

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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.