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Finding the Fourth Proportional to 7,879.70, 10,873.95 and 4,342.91

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Solution

The fourth proportional to 7,879.70, 10,873.95 and 4,342.91 is: 5,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.70 : 10,873.95 = 4,342.91 : x
  2. Step 2: Convert to fraction form
    7,879.70/10,873.95 = 4,342.91/x
  3. Step 3: Cross multiply
    7,879.70x = 10,873.95 × 4,342.91
  4. Step 4: Simplify right side
    7,879.70x = 47,224,515.54
  5. Step 5: Solve for x
    x = 47,224,515.54/7,879.70
  6. Step 6: Final answer
    x = 5,993.19

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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.