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Finding the Fourth Proportional to 8,483.22, 12,717.23 and 4,320.90

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Solution

The fourth proportional to 8,483.22, 12,717.23 and 4,320.90 is: 6,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,483.22 : 12,717.23 = 4,320.90 : x
  2. Step 2: Convert to fraction form
    8,483.22/12,717.23 = 4,320.90/x
  3. Step 3: Cross multiply
    8,483.22x = 12,717.23 × 4,320.90
  4. Step 4: Simplify right side
    8,483.22x = 54,949,857.50
  5. Step 5: Solve for x
    x = 54,949,857.50/8,483.22
  6. Step 6: Final answer
    x = 6,477.48

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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.