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Finding the Fourth Proportional to 2,114.41, 3,172.20 and 882.40

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Solution

The fourth proportional to 2,114.41, 3,172.20 and 882.40 is: 1,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.41 : 3,172.20 = 882.40 : x
  2. Step 2: Convert to fraction form
    2,114.41/3,172.20 = 882.40/x
  3. Step 3: Cross multiply
    2,114.41x = 3,172.20 × 882.40
  4. Step 4: Simplify right side
    2,114.41x = 2,799,149.28
  5. Step 5: Solve for x
    x = 2,799,149.28/2,114.41
  6. Step 6: Final answer
    x = 1,323.84

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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.