Home / 5,450.36-8,176.74-1,987.61

Finding the Fourth Proportional to 5,450.36, 8,176.74 and 1,987.61

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Solution

The fourth proportional to 5,450.36, 8,176.74 and 1,987.61 is: 2,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,450.36 : 8,176.74 = 1,987.61 : x
  2. Step 2: Convert to fraction form
    5,450.36/8,176.74 = 1,987.61/x
  3. Step 3: Cross multiply
    5,450.36x = 8,176.74 × 1,987.61
  4. Step 4: Simplify right side
    5,450.36x = 16,252,129.31
  5. Step 5: Solve for x
    x = 16,252,129.31/5,450.36
  6. Step 6: Final answer
    x = 2,981.85

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Double scale
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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.