Home / 2,889.02-3,991.61-2,779.62

Finding the Fourth Proportional to 2,889.02, 3,991.61 and 2,779.62

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Solution

The fourth proportional to 2,889.02, 3,991.61 and 2,779.62 is: 3,840.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.02 : 3,991.61 = 2,779.62 : x
  2. Step 2: Convert to fraction form
    2,889.02/3,991.61 = 2,779.62/x
  3. Step 3: Cross multiply
    2,889.02x = 3,991.61 × 2,779.62
  4. Step 4: Simplify right side
    2,889.02x = 11,095,158.99
  5. Step 5: Solve for x
    x = 11,095,158.99/2,889.02
  6. Step 6: Final answer
    x = 3,840.46

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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.