Home / 2,884.47-3,977.96-1,889.39

Finding the Fourth Proportional to 2,884.47, 3,977.96 and 1,889.39

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Solution

The fourth proportional to 2,884.47, 3,977.96 and 1,889.39 is: 2,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.47 : 3,977.96 = 1,889.39 : x
  2. Step 2: Convert to fraction form
    2,884.47/3,977.96 = 1,889.39/x
  3. Step 3: Cross multiply
    2,884.47x = 3,977.96 × 1,889.39
  4. Step 4: Simplify right side
    2,884.47x = 7,515,888.51
  5. Step 5: Solve for x
    x = 7,515,888.51/2,884.47
  6. Step 6: Final answer
    x = 2,605.64

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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.