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Finding the Fourth Proportional to 2,679.41, 3,699.84 and 2,015.11

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Solution

The fourth proportional to 2,679.41, 3,699.84 and 2,015.11 is: 2,782.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.41 : 3,699.84 = 2,015.11 : x
  2. Step 2: Convert to fraction form
    2,679.41/3,699.84 = 2,015.11/x
  3. Step 3: Cross multiply
    2,679.41x = 3,699.84 × 2,015.11
  4. Step 4: Simplify right side
    2,679.41x = 7,455,566.08
  5. Step 5: Solve for x
    x = 7,455,566.08/2,679.41
  6. Step 6: Final answer
    x = 2,782.54

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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.