Home / 5,428.40-8,136.20-4,058.80

Finding the Fourth Proportional to 5,428.40, 8,136.20 and 4,058.80

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Solution

The fourth proportional to 5,428.40, 8,136.20 and 4,058.80 is: 6,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.40 : 8,136.20 = 4,058.80 : x
  2. Step 2: Convert to fraction form
    5,428.40/8,136.20 = 4,058.80/x
  3. Step 3: Cross multiply
    5,428.40x = 8,136.20 × 4,058.80
  4. Step 4: Simplify right side
    5,428.40x = 33,023,208.56
  5. Step 5: Solve for x
    x = 33,023,208.56/5,428.40
  6. Step 6: Final answer
    x = 6,083.41

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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.