Home / 6,990.15-10,485.20-2,059.78

Finding the Fourth Proportional to 6,990.15, 10,485.20 and 2,059.78

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Solution

The fourth proportional to 6,990.15, 10,485.20 and 2,059.78 is: 3,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.15 : 10,485.20 = 2,059.78 : x
  2. Step 2: Convert to fraction form
    6,990.15/10,485.20 = 2,059.78/x
  3. Step 3: Cross multiply
    6,990.15x = 10,485.20 × 2,059.78
  4. Step 4: Simplify right side
    6,990.15x = 21,597,205.26
  5. Step 5: Solve for x
    x = 21,597,205.26/6,990.15
  6. Step 6: Final answer
    x = 3,089.66

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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.