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Finding the Fourth Proportional to 1,980.47, 2,733.07 and 1,096.36

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Solution

The fourth proportional to 1,980.47, 2,733.07 and 1,096.36 is: 1,512.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.47 : 2,733.07 = 1,096.36 : x
  2. Step 2: Convert to fraction form
    1,980.47/2,733.07 = 1,096.36/x
  3. Step 3: Cross multiply
    1,980.47x = 2,733.07 × 1,096.36
  4. Step 4: Simplify right side
    1,980.47x = 2,996,428.63
  5. Step 5: Solve for x
    x = 2,996,428.63/1,980.47
  6. Step 6: Final answer
    x = 1,512.99

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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.