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Finding the Fourth Proportional to 1,765.05, 2,643.63 and 1,731.18

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Solution

The fourth proportional to 1,765.05, 2,643.63 and 1,731.18 is: 2,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.05 : 2,643.63 = 1,731.18 : x
  2. Step 2: Convert to fraction form
    1,765.05/2,643.63 = 1,731.18/x
  3. Step 3: Cross multiply
    1,765.05x = 2,643.63 × 1,731.18
  4. Step 4: Simplify right side
    1,765.05x = 4,576,599.38
  5. Step 5: Solve for x
    x = 4,576,599.38/1,765.05
  6. Step 6: Final answer
    x = 2,592.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.