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Finding the Fourth Proportional to 3,091.54, 4,638.06 and 900.28

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Solution

The fourth proportional to 3,091.54, 4,638.06 and 900.28 is: 1,350.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.54 : 4,638.06 = 900.28 : x
  2. Step 2: Convert to fraction form
    3,091.54/4,638.06 = 900.28/x
  3. Step 3: Cross multiply
    3,091.54x = 4,638.06 × 900.28
  4. Step 4: Simplify right side
    3,091.54x = 4,175,548.16
  5. Step 5: Solve for x
    x = 4,175,548.16/3,091.54
  6. Step 6: Final answer
    x = 1,350.64

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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.