Home / 2,975.79-4,109.39-1,915.41

Finding the Fourth Proportional to 2,975.79, 4,109.39 and 1,915.41

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Solution

The fourth proportional to 2,975.79, 4,109.39 and 1,915.41 is: 2,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.79 : 4,109.39 = 1,915.41 : x
  2. Step 2: Convert to fraction form
    2,975.79/4,109.39 = 1,915.41/x
  3. Step 3: Cross multiply
    2,975.79x = 4,109.39 × 1,915.41
  4. Step 4: Simplify right side
    2,975.79x = 7,871,157.12
  5. Step 5: Solve for x
    x = 7,871,157.12/2,975.79
  6. Step 6: Final answer
    x = 2,645.06

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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.