Home / 2,678.34-3,697.37-2,015.44

Finding the Fourth Proportional to 2,678.34, 3,697.37 and 2,015.44

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Solution

The fourth proportional to 2,678.34, 3,697.37 and 2,015.44 is: 2,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.34 : 3,697.37 = 2,015.44 : x
  2. Step 2: Convert to fraction form
    2,678.34/3,697.37 = 2,015.44/x
  3. Step 3: Cross multiply
    2,678.34x = 3,697.37 × 2,015.44
  4. Step 4: Simplify right side
    2,678.34x = 7,451,817.32
  5. Step 5: Solve for x
    x = 7,451,817.32/2,678.34
  6. Step 6: Final answer
    x = 2,782.25

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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.