Home / 3,004.40-4,148.91-2,840.78

Finding the Fourth Proportional to 3,004.40, 4,148.91 and 2,840.78

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Solution

The fourth proportional to 3,004.40, 4,148.91 and 2,840.78 is: 3,922.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,004.40 : 4,148.91 = 2,840.78 : x
  2. Step 2: Convert to fraction form
    3,004.40/4,148.91 = 2,840.78/x
  3. Step 3: Cross multiply
    3,004.40x = 4,148.91 × 2,840.78
  4. Step 4: Simplify right side
    3,004.40x = 11,786,140.55
  5. Step 5: Solve for x
    x = 11,786,140.55/3,004.40
  6. Step 6: Final answer
    x = 3,922.96

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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.