Home / 3,138.89-4,331.65-1,741.64

Finding the Fourth Proportional to 3,138.89, 4,331.65 and 1,741.64

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Solution

The fourth proportional to 3,138.89, 4,331.65 and 1,741.64 is: 2,403.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.89 : 4,331.65 = 1,741.64 : x
  2. Step 2: Convert to fraction form
    3,138.89/4,331.65 = 1,741.64/x
  3. Step 3: Cross multiply
    3,138.89x = 4,331.65 × 1,741.64
  4. Step 4: Simplify right side
    3,138.89x = 7,544,181.38
  5. Step 5: Solve for x
    x = 7,544,181.38/3,138.89
  6. Step 6: Final answer
    x = 2,403.45

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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.