Home / 8,611.29-11,880.52-5,628.84

Finding the Fourth Proportional to 8,611.29, 11,880.52 and 5,628.84

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Solution

The fourth proportional to 8,611.29, 11,880.52 and 5,628.84 is: 7,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.29 : 11,880.52 = 5,628.84 : x
  2. Step 2: Convert to fraction form
    8,611.29/11,880.52 = 5,628.84/x
  3. Step 3: Cross multiply
    8,611.29x = 11,880.52 × 5,628.84
  4. Step 4: Simplify right side
    8,611.29x = 66,873,518.05
  5. Step 5: Solve for x
    x = 66,873,518.05/8,611.29
  6. Step 6: Final answer
    x = 7,765.80

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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.