Home / 2,957.21-4,081.40-2,247.90

Finding the Fourth Proportional to 2,957.21, 4,081.40 and 2,247.90

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Solution

The fourth proportional to 2,957.21, 4,081.40 and 2,247.90 is: 3,102.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,957.21 : 4,081.40 = 2,247.90 : x
  2. Step 2: Convert to fraction form
    2,957.21/4,081.40 = 2,247.90/x
  3. Step 3: Cross multiply
    2,957.21x = 4,081.40 × 2,247.90
  4. Step 4: Simplify right side
    2,957.21x = 9,174,567.82
  5. Step 5: Solve for x
    x = 9,174,567.82/2,957.21
  6. Step 6: Final answer
    x = 3,102.45

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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.