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Finding the Fourth Proportional to 3,393.49, 4,682.58 and 1,977.63

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Solution

The fourth proportional to 3,393.49, 4,682.58 and 1,977.63 is: 2,728.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.49 : 4,682.58 = 1,977.63 : x
  2. Step 2: Convert to fraction form
    3,393.49/4,682.58 = 1,977.63/x
  3. Step 3: Cross multiply
    3,393.49x = 4,682.58 × 1,977.63
  4. Step 4: Simplify right side
    3,393.49x = 9,260,410.69
  5. Step 5: Solve for x
    x = 9,260,410.69/3,393.49
  6. Step 6: Final answer
    x = 2,728.88

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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.