Home / 8,429.20-11,631.80-4,651.60

Finding the Fourth Proportional to 8,429.20, 11,631.80 and 4,651.60

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Solution

The fourth proportional to 8,429.20, 11,631.80 and 4,651.60 is: 6,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.20 : 11,631.80 = 4,651.60 : x
  2. Step 2: Convert to fraction form
    8,429.20/11,631.80 = 4,651.60/x
  3. Step 3: Cross multiply
    8,429.20x = 11,631.80 × 4,651.60
  4. Step 4: Simplify right side
    8,429.20x = 54,106,480.88
  5. Step 5: Solve for x
    x = 54,106,480.88/8,429.20
  6. Step 6: Final answer
    x = 6,418.93

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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.