Home / 1,990.12-2,743.21-1,516.49

Finding the Fourth Proportional to 1,990.12, 2,743.21 and 1,516.49

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Solution

The fourth proportional to 1,990.12, 2,743.21 and 1,516.49 is: 2,090.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.12 : 2,743.21 = 1,516.49 : x
  2. Step 2: Convert to fraction form
    1,990.12/2,743.21 = 1,516.49/x
  3. Step 3: Cross multiply
    1,990.12x = 2,743.21 × 1,516.49
  4. Step 4: Simplify right side
    1,990.12x = 4,160,050.53
  5. Step 5: Solve for x
    x = 4,160,050.53/1,990.12
  6. Step 6: Final answer
    x = 2,090.35

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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.