Home / 5,091.51-7,638.45-1,581.33

Finding the Fourth Proportional to 5,091.51, 7,638.45 and 1,581.33

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Solution

The fourth proportional to 5,091.51, 7,638.45 and 1,581.33 is: 2,372.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.51 : 7,638.45 = 1,581.33 : x
  2. Step 2: Convert to fraction form
    5,091.51/7,638.45 = 1,581.33/x
  3. Step 3: Cross multiply
    5,091.51x = 7,638.45 × 1,581.33
  4. Step 4: Simplify right side
    5,091.51x = 12,078,914.09
  5. Step 5: Solve for x
    x = 12,078,914.09/5,091.51
  6. Step 6: Final answer
    x = 2,372.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.