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Finding the Fourth Proportional to 3,605.99, 4,978.51 and 2,765.07

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Solution

The fourth proportional to 3,605.99, 4,978.51 and 2,765.07 is: 3,817.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.99 : 4,978.51 = 2,765.07 : x
  2. Step 2: Convert to fraction form
    3,605.99/4,978.51 = 2,765.07/x
  3. Step 3: Cross multiply
    3,605.99x = 4,978.51 × 2,765.07
  4. Step 4: Simplify right side
    3,605.99x = 13,765,928.65
  5. Step 5: Solve for x
    x = 13,765,928.65/3,605.99
  6. Step 6: Final answer
    x = 3,817.52

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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.