Home / 2,989.10-4,125.47-1,729.94

Finding the Fourth Proportional to 2,989.10, 4,125.47 and 1,729.94

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Solution

The fourth proportional to 2,989.10, 4,125.47 and 1,729.94 is: 2,387.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.10 : 4,125.47 = 1,729.94 : x
  2. Step 2: Convert to fraction form
    2,989.10/4,125.47 = 1,729.94/x
  3. Step 3: Cross multiply
    2,989.10x = 4,125.47 × 1,729.94
  4. Step 4: Simplify right side
    2,989.10x = 7,136,786.29
  5. Step 5: Solve for x
    x = 7,136,786.29/2,989.10
  6. Step 6: Final answer
    x = 2,387.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.