Home / 8,123.92-12,185.70-2,280.39

Finding the Fourth Proportional to 8,123.92, 12,185.70 and 2,280.39

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Solution

The fourth proportional to 8,123.92, 12,185.70 and 2,280.39 is: 3,420.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.92 : 12,185.70 = 2,280.39 : x
  2. Step 2: Convert to fraction form
    8,123.92/12,185.70 = 2,280.39/x
  3. Step 3: Cross multiply
    8,123.92x = 12,185.70 × 2,280.39
  4. Step 4: Simplify right side
    8,123.92x = 27,788,148.42
  5. Step 5: Solve for x
    x = 27,788,148.42/8,123.92
  6. Step 6: Final answer
    x = 3,420.53

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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.