Home / 1,988.01-2,982.15-1,110.51

Finding the Fourth Proportional to 1,988.01, 2,982.15 and 1,110.51

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Solution

The fourth proportional to 1,988.01, 2,982.15 and 1,110.51 is: 1,665.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.01 : 2,982.15 = 1,110.51 : x
  2. Step 2: Convert to fraction form
    1,988.01/2,982.15 = 1,110.51/x
  3. Step 3: Cross multiply
    1,988.01x = 2,982.15 × 1,110.51
  4. Step 4: Simplify right side
    1,988.01x = 3,311,707.40
  5. Step 5: Solve for x
    x = 3,311,707.40/1,988.01
  6. Step 6: Final answer
    x = 1,665.84

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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.