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Finding the Fourth Proportional to 1,980.92, 2,733.55 and 1,096.67

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Solution

The fourth proportional to 1,980.92, 2,733.55 and 1,096.67 is: 1,513.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.92 : 2,733.55 = 1,096.67 : x
  2. Step 2: Convert to fraction form
    1,980.92/2,733.55 = 1,096.67/x
  3. Step 3: Cross multiply
    1,980.92x = 2,733.55 × 1,096.67
  4. Step 4: Simplify right side
    1,980.92x = 2,997,802.28
  5. Step 5: Solve for x
    x = 2,997,802.28/1,980.92
  6. Step 6: Final answer
    x = 1,513.34

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1.5x scale

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.