Home / 2,485.56-3,421.48-2,149.32

Finding the Fourth Proportional to 2,485.56, 3,421.48 and 2,149.32

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Solution

The fourth proportional to 2,485.56, 3,421.48 and 2,149.32 is: 2,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.56 : 3,421.48 = 2,149.32 : x
  2. Step 2: Convert to fraction form
    2,485.56/3,421.48 = 2,149.32/x
  3. Step 3: Cross multiply
    2,485.56x = 3,421.48 × 2,149.32
  4. Step 4: Simplify right side
    2,485.56x = 7,353,855.39
  5. Step 5: Solve for x
    x = 7,353,855.39/2,485.56
  6. Step 6: Final answer
    x = 2,958.63

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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.