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Finding the Fourth Proportional to 4,440.89, 6,661.89 and 1,320.99

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Solution

The fourth proportional to 4,440.89, 6,661.89 and 1,320.99 is: 1,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,440.89 : 6,661.89 = 1,320.99 : x
  2. Step 2: Convert to fraction form
    4,440.89/6,661.89 = 1,320.99/x
  3. Step 3: Cross multiply
    4,440.89x = 6,661.89 × 1,320.99
  4. Step 4: Simplify right side
    4,440.89x = 8,800,290.07
  5. Step 5: Solve for x
    x = 8,800,290.07/4,440.89
  6. Step 6: Final answer
    x = 1,981.65

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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.