Home / 4,420.81-6,631.28-1,789.57

Finding the Fourth Proportional to 4,420.81, 6,631.28 and 1,789.57

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Solution

The fourth proportional to 4,420.81, 6,631.28 and 1,789.57 is: 2,684.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,420.81 : 6,631.28 = 1,789.57 : x
  2. Step 2: Convert to fraction form
    4,420.81/6,631.28 = 1,789.57/x
  3. Step 3: Cross multiply
    4,420.81x = 6,631.28 × 1,789.57
  4. Step 4: Simplify right side
    4,420.81x = 11,867,130.80
  5. Step 5: Solve for x
    x = 11,867,130.80/4,420.81
  6. Step 6: Final answer
    x = 2,684.38

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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.