Home / 2,985.73-4,122.20-1,923.89

Finding the Fourth Proportional to 2,985.73, 4,122.20 and 1,923.89

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Solution

The fourth proportional to 2,985.73, 4,122.20 and 1,923.89 is: 2,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.73 : 4,122.20 = 1,923.89 : x
  2. Step 2: Convert to fraction form
    2,985.73/4,122.20 = 1,923.89/x
  3. Step 3: Cross multiply
    2,985.73x = 4,122.20 × 1,923.89
  4. Step 4: Simplify right side
    2,985.73x = 7,930,659.36
  5. Step 5: Solve for x
    x = 7,930,659.36/2,985.73
  6. Step 6: Final answer
    x = 2,656.19

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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.