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Finding the Fourth Proportional to 2,031.16, 2,803 and 1,099.66

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Solution

The fourth proportional to 2,031.16, 2,803 and 1,099.66 is: 1,517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.16 : 2,803 = 1,099.66 : x
  2. Step 2: Convert to fraction form
    2,031.16/2,803 = 1,099.66/x
  3. Step 3: Cross multiply
    2,031.16x = 2,803 × 1,099.66
  4. Step 4: Simplify right side
    2,031.16x = 3,082,346.98
  5. Step 5: Solve for x
    x = 3,082,346.98/2,031.16
  6. Step 6: Final answer
    x = 1,517.53

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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.