Home / 5,269.41-7,909.45-2,638.80

Finding the Fourth Proportional to 5,269.41, 7,909.45 and 2,638.80

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Solution

The fourth proportional to 5,269.41, 7,909.45 and 2,638.80 is: 3,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.41 : 7,909.45 = 2,638.80 : x
  2. Step 2: Convert to fraction form
    5,269.41/7,909.45 = 2,638.80/x
  3. Step 3: Cross multiply
    5,269.41x = 7,909.45 × 2,638.80
  4. Step 4: Simplify right side
    5,269.41x = 20,871,450.06
  5. Step 5: Solve for x
    x = 20,871,450.06/5,269.41
  6. Step 6: Final answer
    x = 3,960.87

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1.5x scale

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.