Home / 4,985.67-6,879.83-2,889.93

Finding the Fourth Proportional to 4,985.67, 6,879.83 and 2,889.93

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Solution

The fourth proportional to 4,985.67, 6,879.83 and 2,889.93 is: 3,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.67 : 6,879.83 = 2,889.93 : x
  2. Step 2: Convert to fraction form
    4,985.67/6,879.83 = 2,889.93/x
  3. Step 3: Cross multiply
    4,985.67x = 6,879.83 × 2,889.93
  4. Step 4: Simplify right side
    4,985.67x = 19,882,212.66
  5. Step 5: Solve for x
    x = 19,882,212.66/4,985.67
  6. Step 6: Final answer
    x = 3,987.87

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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.