Home / 2,814.75-3,884.79-1,680.56

Finding the Fourth Proportional to 2,814.75, 3,884.79 and 1,680.56

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Solution

The fourth proportional to 2,814.75, 3,884.79 and 1,680.56 is: 2,319.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.75 : 3,884.79 = 1,680.56 : x
  2. Step 2: Convert to fraction form
    2,814.75/3,884.79 = 1,680.56/x
  3. Step 3: Cross multiply
    2,814.75x = 3,884.79 × 1,680.56
  4. Step 4: Simplify right side
    2,814.75x = 6,528,603.26
  5. Step 5: Solve for x
    x = 6,528,603.26/2,814.75
  6. Step 6: Final answer
    x = 2,319.43

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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.