Home / 8,172.86-11,278.21-4,635.99

Finding the Fourth Proportional to 8,172.86, 11,278.21 and 4,635.99

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Solution

The fourth proportional to 8,172.86, 11,278.21 and 4,635.99 is: 6,397.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.86 : 11,278.21 = 4,635.99 : x
  2. Step 2: Convert to fraction form
    8,172.86/11,278.21 = 4,635.99/x
  3. Step 3: Cross multiply
    8,172.86x = 11,278.21 × 4,635.99
  4. Step 4: Simplify right side
    8,172.86x = 52,285,702.77
  5. Step 5: Solve for x
    x = 52,285,702.77/8,172.86
  6. Step 6: Final answer
    x = 6,397.48

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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.