Home / 3,991.07-5,511.16-2,501.55

Finding the Fourth Proportional to 3,991.07, 5,511.16 and 2,501.55

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Solution

The fourth proportional to 3,991.07, 5,511.16 and 2,501.55 is: 3,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.07 : 5,511.16 = 2,501.55 : x
  2. Step 2: Convert to fraction form
    3,991.07/5,511.16 = 2,501.55/x
  3. Step 3: Cross multiply
    3,991.07x = 5,511.16 × 2,501.55
  4. Step 4: Simplify right side
    3,991.07x = 13,786,402.23
  5. Step 5: Solve for x
    x = 13,786,402.23/3,991.07
  6. Step 6: Final answer
    x = 3,454.31

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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.