Home / 2,635.76-3,638.54-1,679.09

Finding the Fourth Proportional to 2,635.76, 3,638.54 and 1,679.09

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Solution

The fourth proportional to 2,635.76, 3,638.54 and 1,679.09 is: 2,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.76 : 3,638.54 = 1,679.09 : x
  2. Step 2: Convert to fraction form
    2,635.76/3,638.54 = 1,679.09/x
  3. Step 3: Cross multiply
    2,635.76x = 3,638.54 × 1,679.09
  4. Step 4: Simplify right side
    2,635.76x = 6,109,412.69
  5. Step 5: Solve for x
    x = 6,109,412.69/2,635.76
  6. Step 6: Final answer
    x = 2,317.89

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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.