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Finding the Fourth Proportional to 2,179.74, 3,007.22 and 1,339.77

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Solution

The fourth proportional to 2,179.74, 3,007.22 and 1,339.77 is: 1,848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.74 : 3,007.22 = 1,339.77 : x
  2. Step 2: Convert to fraction form
    2,179.74/3,007.22 = 1,339.77/x
  3. Step 3: Cross multiply
    2,179.74x = 3,007.22 × 1,339.77
  4. Step 4: Simplify right side
    2,179.74x = 4,028,986.49
  5. Step 5: Solve for x
    x = 4,028,986.49/2,179.74
  6. Step 6: Final answer
    x = 1,848.38

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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.