Home / 8,611.13-11,880.30-5,628.69

Finding the Fourth Proportional to 8,611.13, 11,880.30 and 5,628.69

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Solution

The fourth proportional to 8,611.13, 11,880.30 and 5,628.69 is: 7,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.13 : 11,880.30 = 5,628.69 : x
  2. Step 2: Convert to fraction form
    8,611.13/11,880.30 = 5,628.69/x
  3. Step 3: Cross multiply
    8,611.13x = 11,880.30 × 5,628.69
  4. Step 4: Simplify right side
    8,611.13x = 66,870,525.81
  5. Step 5: Solve for x
    x = 66,870,525.81/8,611.13
  6. Step 6: Final answer
    x = 7,765.60

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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.