Home / 9,131.42-13,699.19-2,891.81

Finding the Fourth Proportional to 9,131.42, 13,699.19 and 2,891.81

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Solution

The fourth proportional to 9,131.42, 13,699.19 and 2,891.81 is: 4,338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.42 : 13,699.19 = 2,891.81 : x
  2. Step 2: Convert to fraction form
    9,131.42/13,699.19 = 2,891.81/x
  3. Step 3: Cross multiply
    9,131.42x = 13,699.19 × 2,891.81
  4. Step 4: Simplify right side
    9,131.42x = 39,615,474.42
  5. Step 5: Solve for x
    x = 39,615,474.42/9,131.42
  6. Step 6: Final answer
    x = 4,338.37

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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.