Home / 5,440.70-7,512.40-4,179.77

Finding the Fourth Proportional to 5,440.70, 7,512.40 and 4,179.77

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Solution

The fourth proportional to 5,440.70, 7,512.40 and 4,179.77 is: 5,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.70 : 7,512.40 = 4,179.77 : x
  2. Step 2: Convert to fraction form
    5,440.70/7,512.40 = 4,179.77/x
  3. Step 3: Cross multiply
    5,440.70x = 7,512.40 × 4,179.77
  4. Step 4: Simplify right side
    5,440.70x = 31,400,045.69
  5. Step 5: Solve for x
    x = 31,400,045.69/5,440.70
  6. Step 6: Final answer
    x = 5,771.33

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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.