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Finding the Fourth Proportional to 1,765.03, 2,435.73 and 979.10

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Solution

The fourth proportional to 1,765.03, 2,435.73 and 979.10 is: 1,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.03 : 2,435.73 = 979.10 : x
  2. Step 2: Convert to fraction form
    1,765.03/2,435.73 = 979.10/x
  3. Step 3: Cross multiply
    1,765.03x = 2,435.73 × 979.10
  4. Step 4: Simplify right side
    1,765.03x = 2,384,823.24
  5. Step 5: Solve for x
    x = 2,384,823.24/1,765.03
  6. Step 6: Final answer
    x = 1,351.15

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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.