Home / 3,851.52-5,779.92-1,386.36

Finding the Fourth Proportional to 3,851.52, 5,779.92 and 1,386.36

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Solution

The fourth proportional to 3,851.52, 5,779.92 and 1,386.36 is: 2,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.52 : 5,779.92 = 1,386.36 : x
  2. Step 2: Convert to fraction form
    3,851.52/5,779.92 = 1,386.36/x
  3. Step 3: Cross multiply
    3,851.52x = 5,779.92 × 1,386.36
  4. Step 4: Simplify right side
    3,851.52x = 8,013,049.89
  5. Step 5: Solve for x
    x = 8,013,049.89/3,851.52
  6. Step 6: Final answer
    x = 2,080.49

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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.