Home / 2,119.41-3,172.64-1,415.93

Finding the Fourth Proportional to 2,119.41, 3,172.64 and 1,415.93

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Solution

The fourth proportional to 2,119.41, 3,172.64 and 1,415.93 is: 2,119.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.41 : 3,172.64 = 1,415.93 : x
  2. Step 2: Convert to fraction form
    2,119.41/3,172.64 = 1,415.93/x
  3. Step 3: Cross multiply
    2,119.41x = 3,172.64 × 1,415.93
  4. Step 4: Simplify right side
    2,119.41x = 4,492,213.21
  5. Step 5: Solve for x
    x = 4,492,213.21/2,119.41
  6. Step 6: Final answer
    x = 2,119.56

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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.