Home / 3,121.01-4,681.62-1,365.11

Finding the Fourth Proportional to 3,121.01, 4,681.62 and 1,365.11

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Solution

The fourth proportional to 3,121.01, 4,681.62 and 1,365.11 is: 2,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.01 : 4,681.62 = 1,365.11 : x
  2. Step 2: Convert to fraction form
    3,121.01/4,681.62 = 1,365.11/x
  3. Step 3: Cross multiply
    3,121.01x = 4,681.62 × 1,365.11
  4. Step 4: Simplify right side
    3,121.01x = 6,390,919.45
  5. Step 5: Solve for x
    x = 6,390,919.45/3,121.01
  6. Step 6: Final answer
    x = 2,047.71

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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.