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Finding the Fourth Proportional to 1,765.99, 2,645.95 and 1,245.06

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Solution

The fourth proportional to 1,765.99, 2,645.95 and 1,245.06 is: 1,865.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.99 : 2,645.95 = 1,245.06 : x
  2. Step 2: Convert to fraction form
    1,765.99/2,645.95 = 1,245.06/x
  3. Step 3: Cross multiply
    1,765.99x = 2,645.95 × 1,245.06
  4. Step 4: Simplify right side
    1,765.99x = 3,294,366.51
  5. Step 5: Solve for x
    x = 3,294,366.51/1,765.99
  6. Step 6: Final answer
    x = 1,865.45

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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.