Home / 3,455.76-4,745.78-2,958.40

Finding the Fourth Proportional to 3,455.76, 4,745.78 and 2,958.40

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Solution

The fourth proportional to 3,455.76, 4,745.78 and 2,958.40 is: 4,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.76 : 4,745.78 = 2,958.40 : x
  2. Step 2: Convert to fraction form
    3,455.76/4,745.78 = 2,958.40/x
  3. Step 3: Cross multiply
    3,455.76x = 4,745.78 × 2,958.40
  4. Step 4: Simplify right side
    3,455.76x = 14,039,915.55
  5. Step 5: Solve for x
    x = 14,039,915.55/3,455.76
  6. Step 6: Final answer
    x = 4,062.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.