Home / 2,858.26-3,944.40-1,811.20

Finding the Fourth Proportional to 2,858.26, 3,944.40 and 1,811.20

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Solution

The fourth proportional to 2,858.26, 3,944.40 and 1,811.20 is: 2,499.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.26 : 3,944.40 = 1,811.20 : x
  2. Step 2: Convert to fraction form
    2,858.26/3,944.40 = 1,811.20/x
  3. Step 3: Cross multiply
    2,858.26x = 3,944.40 × 1,811.20
  4. Step 4: Simplify right side
    2,858.26x = 7,144,097.28
  5. Step 5: Solve for x
    x = 7,144,097.28/2,858.26
  6. Step 6: Final answer
    x = 2,499.46

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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.