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Finding the Fourth Proportional to 2,325.12, 3,485.85 and 863.47

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Solution

The fourth proportional to 2,325.12, 3,485.85 and 863.47 is: 1,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,325.12 : 3,485.85 = 863.47 : x
  2. Step 2: Convert to fraction form
    2,325.12/3,485.85 = 863.47/x
  3. Step 3: Cross multiply
    2,325.12x = 3,485.85 × 863.47
  4. Step 4: Simplify right side
    2,325.12x = 3,009,926.90
  5. Step 5: Solve for x
    x = 3,009,926.90/2,325.12
  6. Step 6: Final answer
    x = 1,294.53

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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.