Home / 2,989.59-4,125.65-1,809.82

Finding the Fourth Proportional to 2,989.59, 4,125.65 and 1,809.82

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Solution

The fourth proportional to 2,989.59, 4,125.65 and 1,809.82 is: 2,497.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.59 : 4,125.65 = 1,809.82 : x
  2. Step 2: Convert to fraction form
    2,989.59/4,125.65 = 1,809.82/x
  3. Step 3: Cross multiply
    2,989.59x = 4,125.65 × 1,809.82
  4. Step 4: Simplify right side
    2,989.59x = 7,466,683.88
  5. Step 5: Solve for x
    x = 7,466,683.88/2,989.59
  6. Step 6: Final answer
    x = 2,497.56

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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.