Home / 6,660.42-9,981.39-4,190.81

Finding the Fourth Proportional to 6,660.42, 9,981.39 and 4,190.81

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Solution

The fourth proportional to 6,660.42, 9,981.39 and 4,190.81 is: 6,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.42 : 9,981.39 = 4,190.81 : x
  2. Step 2: Convert to fraction form
    6,660.42/9,981.39 = 4,190.81/x
  3. Step 3: Cross multiply
    6,660.42x = 9,981.39 × 4,190.81
  4. Step 4: Simplify right side
    6,660.42x = 41,830,109.03
  5. Step 5: Solve for x
    x = 41,830,109.03/6,660.42
  6. Step 6: Final answer
    x = 6,280.40

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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.