Home / 5,143.03-7,097.64-2,905

Finding the Fourth Proportional to 5,143.03, 7,097.64 and 2,905

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Solution

The fourth proportional to 5,143.03, 7,097.64 and 2,905 is: 4,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.03 : 7,097.64 = 2,905 : x
  2. Step 2: Convert to fraction form
    5,143.03/7,097.64 = 2,905/x
  3. Step 3: Cross multiply
    5,143.03x = 7,097.64 × 2,905
  4. Step 4: Simplify right side
    5,143.03x = 20,618,644.20
  5. Step 5: Solve for x
    x = 20,618,644.20/5,143.03
  6. Step 6: Final answer
    x = 4,009.05

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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.