Home / 3,855.08-5,316.72-2,678.96

Finding the Fourth Proportional to 3,855.08, 5,316.72 and 2,678.96

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Solution

The fourth proportional to 3,855.08, 5,316.72 and 2,678.96 is: 3,694.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.08 : 5,316.72 = 2,678.96 : x
  2. Step 2: Convert to fraction form
    3,855.08/5,316.72 = 2,678.96/x
  3. Step 3: Cross multiply
    3,855.08x = 5,316.72 × 2,678.96
  4. Step 4: Simplify right side
    3,855.08x = 14,243,280.21
  5. Step 5: Solve for x
    x = 14,243,280.21/3,855.08
  6. Step 6: Final answer
    x = 3,694.68

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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.