Home / 6,621.93-9,931.39-1,940.80

Finding the Fourth Proportional to 6,621.93, 9,931.39 and 1,940.80

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Solution

The fourth proportional to 6,621.93, 9,931.39 and 1,940.80 is: 2,910.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.93 : 9,931.39 = 1,940.80 : x
  2. Step 2: Convert to fraction form
    6,621.93/9,931.39 = 1,940.80/x
  3. Step 3: Cross multiply
    6,621.93x = 9,931.39 × 1,940.80
  4. Step 4: Simplify right side
    6,621.93x = 19,274,841.71
  5. Step 5: Solve for x
    x = 19,274,841.71/6,621.93
  6. Step 6: Final answer
    x = 2,910.76

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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.