Home / 4,985.64-6,879.78-2,747.16

Finding the Fourth Proportional to 4,985.64, 6,879.78 and 2,747.16

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Solution

The fourth proportional to 4,985.64, 6,879.78 and 2,747.16 is: 3,790.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.64 : 6,879.78 = 2,747.16 : x
  2. Step 2: Convert to fraction form
    4,985.64/6,879.78 = 2,747.16/x
  3. Step 3: Cross multiply
    4,985.64x = 6,879.78 × 2,747.16
  4. Step 4: Simplify right side
    4,985.64x = 18,899,856.42
  5. Step 5: Solve for x
    x = 18,899,856.42/4,985.64
  6. Step 6: Final answer
    x = 3,790.86

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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.