Home / 4,120.64-6,179.68-1,384

Finding the Fourth Proportional to 4,120.64, 6,179.68 and 1,384

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Solution

The fourth proportional to 4,120.64, 6,179.68 and 1,384 is: 2,075.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.64 : 6,179.68 = 1,384 : x
  2. Step 2: Convert to fraction form
    4,120.64/6,179.68 = 1,384/x
  3. Step 3: Cross multiply
    4,120.64x = 6,179.68 × 1,384
  4. Step 4: Simplify right side
    4,120.64x = 8,552,677.12
  5. Step 5: Solve for x
    x = 8,552,677.12/4,120.64
  6. Step 6: Final answer
    x = 2,075.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.