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Finding the Fourth Proportional to 8,322.40, 12,483.60 and 7,069.60

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Solution

The fourth proportional to 8,322.40, 12,483.60 and 7,069.60 is: 10,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.40 : 12,483.60 = 7,069.60 : x
  2. Step 2: Convert to fraction form
    8,322.40/12,483.60 = 7,069.60/x
  3. Step 3: Cross multiply
    8,322.40x = 12,483.60 × 7,069.60
  4. Step 4: Simplify right side
    8,322.40x = 88,254,058.56
  5. Step 5: Solve for x
    x = 88,254,058.56/8,322.40
  6. Step 6: Final answer
    x = 10,604.40

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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.