Home / 3,108.85-4,289.94-1,764.45

Finding the Fourth Proportional to 3,108.85, 4,289.94 and 1,764.45

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Solution

The fourth proportional to 3,108.85, 4,289.94 and 1,764.45 is: 2,434.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.85 : 4,289.94 = 1,764.45 : x
  2. Step 2: Convert to fraction form
    3,108.85/4,289.94 = 1,764.45/x
  3. Step 3: Cross multiply
    3,108.85x = 4,289.94 × 1,764.45
  4. Step 4: Simplify right side
    3,108.85x = 7,569,384.63
  5. Step 5: Solve for x
    x = 7,569,384.63/3,108.85
  6. Step 6: Final answer
    x = 2,434.79

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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.