Home / 1,679.75-2,313.33-1,643.42

Finding the Fourth Proportional to 1,679.75, 2,313.33 and 1,643.42

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Solution

The fourth proportional to 1,679.75, 2,313.33 and 1,643.42 is: 2,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.75 : 2,313.33 = 1,643.42 : x
  2. Step 2: Convert to fraction form
    1,679.75/2,313.33 = 1,643.42/x
  3. Step 3: Cross multiply
    1,679.75x = 2,313.33 × 1,643.42
  4. Step 4: Simplify right side
    1,679.75x = 3,801,772.79
  5. Step 5: Solve for x
    x = 3,801,772.79/1,679.75
  6. Step 6: Final answer
    x = 2,263.30

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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.