Home / 2,119.54-3,179.63-1,538.93

Finding the Fourth Proportional to 2,119.54, 3,179.63 and 1,538.93

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Solution

The fourth proportional to 2,119.54, 3,179.63 and 1,538.93 is: 2,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.54 : 3,179.63 = 1,538.93 : x
  2. Step 2: Convert to fraction form
    2,119.54/3,179.63 = 1,538.93/x
  3. Step 3: Cross multiply
    2,119.54x = 3,179.63 × 1,538.93
  4. Step 4: Simplify right side
    2,119.54x = 4,893,228.00
  5. Step 5: Solve for x
    x = 4,893,228.00/2,119.54
  6. Step 6: Final answer
    x = 2,308.63

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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.