Home / 3,128.85-4,693.28-2,764.35

Finding the Fourth Proportional to 3,128.85, 4,693.28 and 2,764.35

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Solution

The fourth proportional to 3,128.85, 4,693.28 and 2,764.35 is: 4,146.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.85 : 4,693.28 = 2,764.35 : x
  2. Step 2: Convert to fraction form
    3,128.85/4,693.28 = 2,764.35/x
  3. Step 3: Cross multiply
    3,128.85x = 4,693.28 × 2,764.35
  4. Step 4: Simplify right side
    3,128.85x = 12,973,854.75
  5. Step 5: Solve for x
    x = 12,973,854.75/3,128.85
  6. Step 6: Final answer
    x = 4,146.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.