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Finding the Fourth Proportional to 30,879.52, 46,319.30 and 7,505.80

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Solution

The fourth proportional to 30,879.52, 46,319.30 and 7,505.80 is: 11,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.52 : 46,319.30 = 7,505.80 : x
  2. Step 2: Convert to fraction form
    30,879.52/46,319.30 = 7,505.80/x
  3. Step 3: Cross multiply
    30,879.52x = 46,319.30 × 7,505.80
  4. Step 4: Simplify right side
    30,879.52x = 347,663,401.94
  5. Step 5: Solve for x
    x = 347,663,401.94/30,879.52
  6. Step 6: Final answer
    x = 11,258.70

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1.5x scale

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.