Home / 4,847.45-6,690.56-3,078.72

Finding the Fourth Proportional to 4,847.45, 6,690.56 and 3,078.72

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Solution

The fourth proportional to 4,847.45, 6,690.56 and 3,078.72 is: 4,249.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,847.45 : 6,690.56 = 3,078.72 : x
  2. Step 2: Convert to fraction form
    4,847.45/6,690.56 = 3,078.72/x
  3. Step 3: Cross multiply
    4,847.45x = 6,690.56 × 3,078.72
  4. Step 4: Simplify right side
    4,847.45x = 20,598,345.49
  5. Step 5: Solve for x
    x = 20,598,345.49/4,847.45
  6. Step 6: Final answer
    x = 4,249.32

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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.