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Finding the Fourth Proportional to 5,879.64, 8,798.86 and 4,215.60

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Solution

The fourth proportional to 5,879.64, 8,798.86 and 4,215.60 is: 6,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.64 : 8,798.86 = 4,215.60 : x
  2. Step 2: Convert to fraction form
    5,879.64/8,798.86 = 4,215.60/x
  3. Step 3: Cross multiply
    5,879.64x = 8,798.86 × 4,215.60
  4. Step 4: Simplify right side
    5,879.64x = 37,092,474.22
  5. Step 5: Solve for x
    x = 37,092,474.22/5,879.64
  6. Step 6: Final answer
    x = 6,308.63

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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.