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Finding the Fourth Proportional to 8,620.04, 12,930.06 and 4,722.32

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Solution

The fourth proportional to 8,620.04, 12,930.06 and 4,722.32 is: 7,083.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.04 : 12,930.06 = 4,722.32 : x
  2. Step 2: Convert to fraction form
    8,620.04/12,930.06 = 4,722.32/x
  3. Step 3: Cross multiply
    8,620.04x = 12,930.06 × 4,722.32
  4. Step 4: Simplify right side
    8,620.04x = 61,059,880.94
  5. Step 5: Solve for x
    x = 61,059,880.94/8,620.04
  6. Step 6: Final answer
    x = 7,083.48

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Similar ratio
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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.