Home / 8,605.20-11,871.72-6,612.24

Finding the Fourth Proportional to 8,605.20, 11,871.72 and 6,612.24

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Solution

The fourth proportional to 8,605.20, 11,871.72 and 6,612.24 is: 9,122.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.20 : 11,871.72 = 6,612.24 : x
  2. Step 2: Convert to fraction form
    8,605.20/11,871.72 = 6,612.24/x
  3. Step 3: Cross multiply
    8,605.20x = 11,871.72 × 6,612.24
  4. Step 4: Simplify right side
    8,605.20x = 78,498,661.85
  5. Step 5: Solve for x
    x = 78,498,661.85/8,605.20
  6. Step 6: Final answer
    x = 9,122.24

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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.