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Finding the Fourth Proportional to 1,985.73, 2,979.44 and 998.03

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Solution

The fourth proportional to 1,985.73, 2,979.44 and 998.03 is: 1,497.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.73 : 2,979.44 = 998.03 : x
  2. Step 2: Convert to fraction form
    1,985.73/2,979.44 = 998.03/x
  3. Step 3: Cross multiply
    1,985.73x = 2,979.44 × 998.03
  4. Step 4: Simplify right side
    1,985.73x = 2,973,570.50
  5. Step 5: Solve for x
    x = 2,973,570.50/1,985.73
  6. Step 6: Final answer
    x = 1,497.47

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1.5x scale

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.