Home / 2,661.23-3,670.40-2,311.31

Finding the Fourth Proportional to 2,661.23, 3,670.40 and 2,311.31

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Solution

The fourth proportional to 2,661.23, 3,670.40 and 2,311.31 is: 3,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.23 : 3,670.40 = 2,311.31 : x
  2. Step 2: Convert to fraction form
    2,661.23/3,670.40 = 2,311.31/x
  3. Step 3: Cross multiply
    2,661.23x = 3,670.40 × 2,311.31
  4. Step 4: Simplify right side
    2,661.23x = 8,483,402.32
  5. Step 5: Solve for x
    x = 8,483,402.32/2,661.23
  6. Step 6: Final answer
    x = 3,187.78

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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.