Home / 5,112.01-7,666.14-1,991.69

Finding the Fourth Proportional to 5,112.01, 7,666.14 and 1,991.69

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Solution

The fourth proportional to 5,112.01, 7,666.14 and 1,991.69 is: 2,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.01 : 7,666.14 = 1,991.69 : x
  2. Step 2: Convert to fraction form
    5,112.01/7,666.14 = 1,991.69/x
  3. Step 3: Cross multiply
    5,112.01x = 7,666.14 × 1,991.69
  4. Step 4: Simplify right side
    5,112.01x = 15,268,572.26
  5. Step 5: Solve for x
    x = 15,268,572.26/5,112.01
  6. Step 6: Final answer
    x = 2,986.80

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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.