Home / 5,450.78-8,176.25-1,555.19

Finding the Fourth Proportional to 5,450.78, 8,176.25 and 1,555.19

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Solution

The fourth proportional to 5,450.78, 8,176.25 and 1,555.19 is: 2,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,450.78 : 8,176.25 = 1,555.19 : x
  2. Step 2: Convert to fraction form
    5,450.78/8,176.25 = 1,555.19/x
  3. Step 3: Cross multiply
    5,450.78x = 8,176.25 × 1,555.19
  4. Step 4: Simplify right side
    5,450.78x = 12,715,601.80
  5. Step 5: Solve for x
    x = 12,715,601.80/5,450.78
  6. Step 6: Final answer
    x = 2,332.80

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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.