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Finding the Fourth Proportional to 8,321.50, 11,483.70 and 4,784.92

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Solution

The fourth proportional to 8,321.50, 11,483.70 and 4,784.92 is: 6,603.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.50 : 11,483.70 = 4,784.92 : x
  2. Step 2: Convert to fraction form
    8,321.50/11,483.70 = 4,784.92/x
  3. Step 3: Cross multiply
    8,321.50x = 11,483.70 × 4,784.92
  4. Step 4: Simplify right side
    8,321.50x = 54,948,585.80
  5. Step 5: Solve for x
    x = 54,948,585.80/8,321.50
  6. Step 6: Final answer
    x = 6,603.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.