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Finding the Fourth Proportional to 7,206.62, 10,809.86 and 3,918.96

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Solution

The fourth proportional to 7,206.62, 10,809.86 and 3,918.96 is: 5,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,206.62 : 10,809.86 = 3,918.96 : x
  2. Step 2: Convert to fraction form
    7,206.62/10,809.86 = 3,918.96/x
  3. Step 3: Cross multiply
    7,206.62x = 10,809.86 × 3,918.96
  4. Step 4: Simplify right side
    7,206.62x = 42,363,389.35
  5. Step 5: Solve for x
    x = 42,363,389.35/7,206.62
  6. Step 6: Final answer
    x = 5,878.40

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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.