Home / 3,131.01-4,314.84-2,291.98

Finding the Fourth Proportional to 3,131.01, 4,314.84 and 2,291.98

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Solution

The fourth proportional to 3,131.01, 4,314.84 and 2,291.98 is: 3,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.01 : 4,314.84 = 2,291.98 : x
  2. Step 2: Convert to fraction form
    3,131.01/4,314.84 = 2,291.98/x
  3. Step 3: Cross multiply
    3,131.01x = 4,314.84 × 2,291.98
  4. Step 4: Simplify right side
    3,131.01x = 9,889,516.70
  5. Step 5: Solve for x
    x = 9,889,516.70/3,131.01
  6. Step 6: Final answer
    x = 3,158.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.