Home / 5,665.50-7,818.87-3,181.98

Finding the Fourth Proportional to 5,665.50, 7,818.87 and 3,181.98

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Solution

The fourth proportional to 5,665.50, 7,818.87 and 3,181.98 is: 4,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.50 : 7,818.87 = 3,181.98 : x
  2. Step 2: Convert to fraction form
    5,665.50/7,818.87 = 3,181.98/x
  3. Step 3: Cross multiply
    5,665.50x = 7,818.87 × 3,181.98
  4. Step 4: Simplify right side
    5,665.50x = 24,879,487.96
  5. Step 5: Solve for x
    x = 24,879,487.96/5,665.50
  6. Step 6: Final answer
    x = 4,391.40

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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.