Home / 1,990.06-2,746.34-1,308.44

Finding the Fourth Proportional to 1,990.06, 2,746.34 and 1,308.44

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Solution

The fourth proportional to 1,990.06, 2,746.34 and 1,308.44 is: 1,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.06 : 2,746.34 = 1,308.44 : x
  2. Step 2: Convert to fraction form
    1,990.06/2,746.34 = 1,308.44/x
  3. Step 3: Cross multiply
    1,990.06x = 2,746.34 × 1,308.44
  4. Step 4: Simplify right side
    1,990.06x = 3,593,421.11
  5. Step 5: Solve for x
    x = 3,593,421.11/1,990.06
  6. Step 6: Final answer
    x = 1,805.68

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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.