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Finding the Fourth Proportional to 5,879.66, 8,111.12 and 3,521.34

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Solution

The fourth proportional to 5,879.66, 8,111.12 and 3,521.34 is: 4,857.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.66 : 8,111.12 = 3,521.34 : x
  2. Step 2: Convert to fraction form
    5,879.66/8,111.12 = 3,521.34/x
  3. Step 3: Cross multiply
    5,879.66x = 8,111.12 × 3,521.34
  4. Step 4: Simplify right side
    5,879.66x = 28,562,011.30
  5. Step 5: Solve for x
    x = 28,562,011.30/5,879.66
  6. Step 6: Final answer
    x = 4,857.77

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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.