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Finding the Fourth Proportional to 2,271.21, 3,407.21 and 885.30

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Solution

The fourth proportional to 2,271.21, 3,407.21 and 885.30 is: 1,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.21 : 3,407.21 = 885.30 : x
  2. Step 2: Convert to fraction form
    2,271.21/3,407.21 = 885.30/x
  3. Step 3: Cross multiply
    2,271.21x = 3,407.21 × 885.30
  4. Step 4: Simplify right side
    2,271.21x = 3,016,403.01
  5. Step 5: Solve for x
    x = 3,016,403.01/2,271.21
  6. Step 6: Final answer
    x = 1,328.10

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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.