Home / 7,186.02-10,778.73-1,991.76

Finding the Fourth Proportional to 7,186.02, 10,778.73 and 1,991.76

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Solution

The fourth proportional to 7,186.02, 10,778.73 and 1,991.76 is: 2,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.02 : 10,778.73 = 1,991.76 : x
  2. Step 2: Convert to fraction form
    7,186.02/10,778.73 = 1,991.76/x
  3. Step 3: Cross multiply
    7,186.02x = 10,778.73 × 1,991.76
  4. Step 4: Simplify right side
    7,186.02x = 21,468,643.26
  5. Step 5: Solve for x
    x = 21,468,643.26/7,186.02
  6. Step 6: Final answer
    x = 2,987.56

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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.