Home / 5,139.65-7,704.75-1,851.94

Finding the Fourth Proportional to 5,139.65, 7,704.75 and 1,851.94

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Solution

The fourth proportional to 5,139.65, 7,704.75 and 1,851.94 is: 2,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.65 : 7,704.75 = 1,851.94 : x
  2. Step 2: Convert to fraction form
    5,139.65/7,704.75 = 1,851.94/x
  3. Step 3: Cross multiply
    5,139.65x = 7,704.75 × 1,851.94
  4. Step 4: Simplify right side
    5,139.65x = 14,268,734.72
  5. Step 5: Solve for x
    x = 14,268,734.72/5,139.65
  6. Step 6: Final answer
    x = 2,776.21

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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.