Home / 6,915.80-10,371.57-1,984.11

Finding the Fourth Proportional to 6,915.80, 10,371.57 and 1,984.11

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Solution

The fourth proportional to 6,915.80, 10,371.57 and 1,984.11 is: 2,975.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.80 : 10,371.57 = 1,984.11 : x
  2. Step 2: Convert to fraction form
    6,915.80/10,371.57 = 1,984.11/x
  3. Step 3: Cross multiply
    6,915.80x = 10,371.57 × 1,984.11
  4. Step 4: Simplify right side
    6,915.80x = 20,578,335.75
  5. Step 5: Solve for x
    x = 20,578,335.75/6,915.80
  6. Step 6: Final answer
    x = 2,975.56

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1.5x scale

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.