Home / 5,679.41-7,840.01-3,817.49

Finding the Fourth Proportional to 5,679.41, 7,840.01 and 3,817.49

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Solution

The fourth proportional to 5,679.41, 7,840.01 and 3,817.49 is: 5,269.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.41 : 7,840.01 = 3,817.49 : x
  2. Step 2: Convert to fraction form
    5,679.41/7,840.01 = 3,817.49/x
  3. Step 3: Cross multiply
    5,679.41x = 7,840.01 × 3,817.49
  4. Step 4: Simplify right side
    5,679.41x = 29,929,140.69
  5. Step 5: Solve for x
    x = 29,929,140.69/5,679.41
  6. Step 6: Final answer
    x = 5,269.76

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1.5x scale

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.