Home / 7,186.86-10,779.08-1,991.52

Finding the Fourth Proportional to 7,186.86, 10,779.08 and 1,991.52

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Solution

The fourth proportional to 7,186.86, 10,779.08 and 1,991.52 is: 2,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.86 : 10,779.08 = 1,991.52 : x
  2. Step 2: Convert to fraction form
    7,186.86/10,779.08 = 1,991.52/x
  3. Step 3: Cross multiply
    7,186.86x = 10,779.08 × 1,991.52
  4. Step 4: Simplify right side
    7,186.86x = 21,466,743.44
  5. Step 5: Solve for x
    x = 21,466,743.44/7,186.86
  6. Step 6: Final answer
    x = 2,986.94

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1.5x scale

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.