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Finding the Fourth Proportional to 2,842.79, 3,924.14 and 1,664.24

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Solution

The fourth proportional to 2,842.79, 3,924.14 and 1,664.24 is: 2,297.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.79 : 3,924.14 = 1,664.24 : x
  2. Step 2: Convert to fraction form
    2,842.79/3,924.14 = 1,664.24/x
  3. Step 3: Cross multiply
    2,842.79x = 3,924.14 × 1,664.24
  4. Step 4: Simplify right side
    2,842.79x = 6,530,682.81
  5. Step 5: Solve for x
    x = 6,530,682.81/2,842.79
  6. Step 6: Final answer
    x = 2,297.28

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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.