Home / 2,311.33-3,189.47-1,415.22

Finding the Fourth Proportional to 2,311.33, 3,189.47 and 1,415.22

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Solution

The fourth proportional to 2,311.33, 3,189.47 and 1,415.22 is: 1,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.33 : 3,189.47 = 1,415.22 : x
  2. Step 2: Convert to fraction form
    2,311.33/3,189.47 = 1,415.22/x
  3. Step 3: Cross multiply
    2,311.33x = 3,189.47 × 1,415.22
  4. Step 4: Simplify right side
    2,311.33x = 4,513,788.00
  5. Step 5: Solve for x
    x = 4,513,788.00/2,311.33
  6. Step 6: Final answer
    x = 1,952.90

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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.