Home / 5,186.16-7,779.90-1,900.80

Finding the Fourth Proportional to 5,186.16, 7,779.90 and 1,900.80

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Solution

The fourth proportional to 5,186.16, 7,779.90 and 1,900.80 is: 2,851.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.16 : 7,779.90 = 1,900.80 : x
  2. Step 2: Convert to fraction form
    5,186.16/7,779.90 = 1,900.80/x
  3. Step 3: Cross multiply
    5,186.16x = 7,779.90 × 1,900.80
  4. Step 4: Simplify right side
    5,186.16x = 14,788,033.92
  5. Step 5: Solve for x
    x = 14,788,033.92/5,186.16
  6. Step 6: Final answer
    x = 2,851.44

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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.