Home / 5,143.21-7,097.29-2,905.31

Finding the Fourth Proportional to 5,143.21, 7,097.29 and 2,905.31

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Solution

The fourth proportional to 5,143.21, 7,097.29 and 2,905.31 is: 4,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.21 : 7,097.29 = 2,905.31 : x
  2. Step 2: Convert to fraction form
    5,143.21/7,097.29 = 2,905.31/x
  3. Step 3: Cross multiply
    5,143.21x = 7,097.29 × 2,905.31
  4. Step 4: Simplify right side
    5,143.21x = 20,619,838.09
  5. Step 5: Solve for x
    x = 20,619,838.09/5,143.21
  6. Step 6: Final answer
    x = 4,009.14

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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.