Home / 4,678.81-6,453.87-2,789.12

Finding the Fourth Proportional to 4,678.81, 6,453.87 and 2,789.12

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Solution

The fourth proportional to 4,678.81, 6,453.87 and 2,789.12 is: 3,847.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.81 : 6,453.87 = 2,789.12 : x
  2. Step 2: Convert to fraction form
    4,678.81/6,453.87 = 2,789.12/x
  3. Step 3: Cross multiply
    4,678.81x = 6,453.87 × 2,789.12
  4. Step 4: Simplify right side
    4,678.81x = 18,000,617.89
  5. Step 5: Solve for x
    x = 18,000,617.89/4,678.81
  6. Step 6: Final answer
    x = 3,847.26

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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.