Home / 2,973.18-4,090.41-2,891.16

Finding the Fourth Proportional to 2,973.18, 4,090.41 and 2,891.16

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Solution

The fourth proportional to 2,973.18, 4,090.41 and 2,891.16 is: 3,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,973.18 : 4,090.41 = 2,891.16 : x
  2. Step 2: Convert to fraction form
    2,973.18/4,090.41 = 2,891.16/x
  3. Step 3: Cross multiply
    2,973.18x = 4,090.41 × 2,891.16
  4. Step 4: Simplify right side
    2,973.18x = 11,826,025.55
  5. Step 5: Solve for x
    x = 11,826,025.55/2,973.18
  6. Step 6: Final answer
    x = 3,977.57

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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.