Home / 5,425.23-8,139.80-2,136.50

Finding the Fourth Proportional to 5,425.23, 8,139.80 and 2,136.50

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Solution

The fourth proportional to 5,425.23, 8,139.80 and 2,136.50 is: 3,205.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.23 : 8,139.80 = 2,136.50 : x
  2. Step 2: Convert to fraction form
    5,425.23/8,139.80 = 2,136.50/x
  3. Step 3: Cross multiply
    5,425.23x = 8,139.80 × 2,136.50
  4. Step 4: Simplify right side
    5,425.23x = 17,390,682.70
  5. Step 5: Solve for x
    x = 17,390,682.70/5,425.23
  6. Step 6: Final answer
    x = 3,205.52

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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.