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Finding the Fourth Proportional to 8,289.76, 12,435.20 and 3,095.52

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Solution

The fourth proportional to 8,289.76, 12,435.20 and 3,095.52 is: 4,643.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.76 : 12,435.20 = 3,095.52 : x
  2. Step 2: Convert to fraction form
    8,289.76/12,435.20 = 3,095.52/x
  3. Step 3: Cross multiply
    8,289.76x = 12,435.20 × 3,095.52
  4. Step 4: Simplify right side
    8,289.76x = 38,493,410.30
  5. Step 5: Solve for x
    x = 38,493,410.30/8,289.76
  6. Step 6: Final answer
    x = 4,643.49

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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.