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Finding the Fourth Proportional to 3,851.65, 5,780.07 and 1,660.60

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Solution

The fourth proportional to 3,851.65, 5,780.07 and 1,660.60 is: 2,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.65 : 5,780.07 = 1,660.60 : x
  2. Step 2: Convert to fraction form
    3,851.65/5,780.07 = 1,660.60/x
  3. Step 3: Cross multiply
    3,851.65x = 5,780.07 × 1,660.60
  4. Step 4: Simplify right side
    3,851.65x = 9,598,384.24
  5. Step 5: Solve for x
    x = 9,598,384.24/3,851.65
  6. Step 6: Final answer
    x = 2,492.02

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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.