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Finding the Fourth Proportional to 8,483.32, 12,708.78 and 5,555.80

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Solution

The fourth proportional to 8,483.32, 12,708.78 and 5,555.80 is: 8,323.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,483.32 : 12,708.78 = 5,555.80 : x
  2. Step 2: Convert to fraction form
    8,483.32/12,708.78 = 5,555.80/x
  3. Step 3: Cross multiply
    8,483.32x = 12,708.78 × 5,555.80
  4. Step 4: Simplify right side
    8,483.32x = 70,607,439.92
  5. Step 5: Solve for x
    x = 70,607,439.92/8,483.32
  6. Step 6: Final answer
    x = 8,323.09

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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.