Home / 8,155.08-12,219.84-6,310.80

Finding the Fourth Proportional to 8,155.08, 12,219.84 and 6,310.80

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Solution

The fourth proportional to 8,155.08, 12,219.84 and 6,310.80 is: 9,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.08 : 12,219.84 = 6,310.80 : x
  2. Step 2: Convert to fraction form
    8,155.08/12,219.84 = 6,310.80/x
  3. Step 3: Cross multiply
    8,155.08x = 12,219.84 × 6,310.80
  4. Step 4: Simplify right side
    8,155.08x = 77,116,966.27
  5. Step 5: Solve for x
    x = 77,116,966.27/8,155.08
  6. Step 6: Final answer
    x = 9,456.31

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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.