Home / 5,138.96-7,091.42-2,900.93

Finding the Fourth Proportional to 5,138.96, 7,091.42 and 2,900.93

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Solution

The fourth proportional to 5,138.96, 7,091.42 and 2,900.93 is: 4,003.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.96 : 7,091.42 = 2,900.93 : x
  2. Step 2: Convert to fraction form
    5,138.96/7,091.42 = 2,900.93/x
  3. Step 3: Cross multiply
    5,138.96x = 7,091.42 × 2,900.93
  4. Step 4: Simplify right side
    5,138.96x = 20,571,663.06
  5. Step 5: Solve for x
    x = 20,571,663.06/5,138.96
  6. Step 6: Final answer
    x = 4,003.08

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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.