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Finding the Fourth Proportional to 8,753.60, 12,289.60 and 8,753.60

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Solution

The fourth proportional to 8,753.60, 12,289.60 and 8,753.60 is: 12,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.60 : 12,289.60 = 8,753.60 : x
  2. Step 2: Convert to fraction form
    8,753.60/12,289.60 = 8,753.60/x
  3. Step 3: Cross multiply
    8,753.60x = 12,289.60 × 8,753.60
  4. Step 4: Simplify right side
    8,753.60x = 107,578,242.56
  5. Step 5: Solve for x
    x = 107,578,242.56/8,753.60
  6. Step 6: Final answer
    x = 12,289.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.