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Finding the Fourth Proportional to 8,248.40, 12,372.60 and 7,276.40

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Solution

The fourth proportional to 8,248.40, 12,372.60 and 7,276.40 is: 10,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,248.40 : 12,372.60 = 7,276.40 : x
  2. Step 2: Convert to fraction form
    8,248.40/12,372.60 = 7,276.40/x
  3. Step 3: Cross multiply
    8,248.40x = 12,372.60 × 7,276.40
  4. Step 4: Simplify right side
    8,248.40x = 90,027,986.64
  5. Step 5: Solve for x
    x = 90,027,986.64/8,248.40
  6. Step 6: Final answer
    x = 10,914.60

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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.