Home / 3,261.63-4,890-1,962.81

Finding the Fourth Proportional to 3,261.63, 4,890 and 1,962.81

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Solution

The fourth proportional to 3,261.63, 4,890 and 1,962.81 is: 2,942.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.63 : 4,890 = 1,962.81 : x
  2. Step 2: Convert to fraction form
    3,261.63/4,890 = 1,962.81/x
  3. Step 3: Cross multiply
    3,261.63x = 4,890 × 1,962.81
  4. Step 4: Simplify right side
    3,261.63x = 9,598,140.90
  5. Step 5: Solve for x
    x = 9,598,140.90/3,261.63
  6. Step 6: Final answer
    x = 2,942.74

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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.