Home / 3,100.28-4,651.19-909.03

Finding the Fourth Proportional to 3,100.28, 4,651.19 and 909.03

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Solution

The fourth proportional to 3,100.28, 4,651.19 and 909.03 is: 1,363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.28 : 4,651.19 = 909.03 : x
  2. Step 2: Convert to fraction form
    3,100.28/4,651.19 = 909.03/x
  3. Step 3: Cross multiply
    3,100.28x = 4,651.19 × 909.03
  4. Step 4: Simplify right side
    3,100.28x = 4,228,066.70
  5. Step 5: Solve for x
    x = 4,228,066.70/3,100.28
  6. Step 6: Final answer
    x = 1,363.77

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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.