Home / 3,959.40-5,939.02-1,186.02

Finding the Fourth Proportional to 3,959.40, 5,939.02 and 1,186.02

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Solution

The fourth proportional to 3,959.40, 5,939.02 and 1,186.02 is: 1,779.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.40 : 5,939.02 = 1,186.02 : x
  2. Step 2: Convert to fraction form
    3,959.40/5,939.02 = 1,186.02/x
  3. Step 3: Cross multiply
    3,959.40x = 5,939.02 × 1,186.02
  4. Step 4: Simplify right side
    3,959.40x = 7,043,796.50
  5. Step 5: Solve for x
    x = 7,043,796.50/3,959.40
  6. Step 6: Final answer
    x = 1,779.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.