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Finding the Fourth Proportional to 5,276.56, 7,914.56 and 1,989.44

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Solution

The fourth proportional to 5,276.56, 7,914.56 and 1,989.44 is: 2,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.56 : 7,914.56 = 1,989.44 : x
  2. Step 2: Convert to fraction form
    5,276.56/7,914.56 = 1,989.44/x
  3. Step 3: Cross multiply
    5,276.56x = 7,914.56 × 1,989.44
  4. Step 4: Simplify right side
    5,276.56x = 15,745,542.25
  5. Step 5: Solve for x
    x = 15,745,542.25/5,276.56
  6. Step 6: Final answer
    x = 2,984.05

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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.