Home / 1,940.61-2,909.81-1,325.06

Finding the Fourth Proportional to 1,940.61, 2,909.81 and 1,325.06

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Solution

The fourth proportional to 1,940.61, 2,909.81 and 1,325.06 is: 1,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.61 : 2,909.81 = 1,325.06 : x
  2. Step 2: Convert to fraction form
    1,940.61/2,909.81 = 1,325.06/x
  3. Step 3: Cross multiply
    1,940.61x = 2,909.81 × 1,325.06
  4. Step 4: Simplify right side
    1,940.61x = 3,855,672.84
  5. Step 5: Solve for x
    x = 3,855,672.84/1,940.61
  6. Step 6: Final answer
    x = 1,986.84

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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.