Home / 5,205.95-7,811.97-1,921.33

Finding the Fourth Proportional to 5,205.95, 7,811.97 and 1,921.33

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Solution

The fourth proportional to 5,205.95, 7,811.97 and 1,921.33 is: 2,883.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.95 : 7,811.97 = 1,921.33 : x
  2. Step 2: Convert to fraction form
    5,205.95/7,811.97 = 1,921.33/x
  3. Step 3: Cross multiply
    5,205.95x = 7,811.97 × 1,921.33
  4. Step 4: Simplify right side
    5,205.95x = 15,009,372.32
  5. Step 5: Solve for x
    x = 15,009,372.32/5,205.95
  6. Step 6: Final answer
    x = 2,883.12

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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.