Home / 2,989.51-4,481.15-1,427.17

Finding the Fourth Proportional to 2,989.51, 4,481.15 and 1,427.17

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Solution

The fourth proportional to 2,989.51, 4,481.15 and 1,427.17 is: 2,139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.51 : 4,481.15 = 1,427.17 : x
  2. Step 2: Convert to fraction form
    2,989.51/4,481.15 = 1,427.17/x
  3. Step 3: Cross multiply
    2,989.51x = 4,481.15 × 1,427.17
  4. Step 4: Simplify right side
    2,989.51x = 6,395,356.92
  5. Step 5: Solve for x
    x = 6,395,356.92/2,989.51
  6. Step 6: Final answer
    x = 2,139.27

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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.