Home / 2,989.07-4,125.05-1,730.18

Finding the Fourth Proportional to 2,989.07, 4,125.05 and 1,730.18

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Solution

The fourth proportional to 2,989.07, 4,125.05 and 1,730.18 is: 2,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.07 : 4,125.05 = 1,730.18 : x
  2. Step 2: Convert to fraction form
    2,989.07/4,125.05 = 1,730.18/x
  3. Step 3: Cross multiply
    2,989.07x = 4,125.05 × 1,730.18
  4. Step 4: Simplify right side
    2,989.07x = 7,137,049.73
  5. Step 5: Solve for x
    x = 7,137,049.73/2,989.07
  6. Step 6: Final answer
    x = 2,387.72

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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.