Home / 2,113.28-3,168.36-1,002.80

Finding the Fourth Proportional to 2,113.28, 3,168.36 and 1,002.80

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Solution

The fourth proportional to 2,113.28, 3,168.36 and 1,002.80 is: 1,503.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.28 : 3,168.36 = 1,002.80 : x
  2. Step 2: Convert to fraction form
    2,113.28/3,168.36 = 1,002.80/x
  3. Step 3: Cross multiply
    2,113.28x = 3,168.36 × 1,002.80
  4. Step 4: Simplify right side
    2,113.28x = 3,177,231.41
  5. Step 5: Solve for x
    x = 3,177,231.41/2,113.28
  6. Step 6: Final answer
    x = 1,503.46

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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.