Home / 1,991.43-2,746.29-1,518.50

Finding the Fourth Proportional to 1,991.43, 2,746.29 and 1,518.50

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Solution

The fourth proportional to 1,991.43, 2,746.29 and 1,518.50 is: 2,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.43 : 2,746.29 = 1,518.50 : x
  2. Step 2: Convert to fraction form
    1,991.43/2,746.29 = 1,518.50/x
  3. Step 3: Cross multiply
    1,991.43x = 2,746.29 × 1,518.50
  4. Step 4: Simplify right side
    1,991.43x = 4,170,227.63
  5. Step 5: Solve for x
    x = 4,170,227.63/1,991.43
  6. Step 6: Final answer
    x = 2,094.09

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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.