Home / 4,515.50-6,774.60-1,918.64

Finding the Fourth Proportional to 4,515.50, 6,774.60 and 1,918.64

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Solution

The fourth proportional to 4,515.50, 6,774.60 and 1,918.64 is: 2,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,515.50 : 6,774.60 = 1,918.64 : x
  2. Step 2: Convert to fraction form
    4,515.50/6,774.60 = 1,918.64/x
  3. Step 3: Cross multiply
    4,515.50x = 6,774.60 × 1,918.64
  4. Step 4: Simplify right side
    4,515.50x = 12,998,018.54
  5. Step 5: Solve for x
    x = 12,998,018.54/4,515.50
  6. Step 6: Final answer
    x = 2,878.53

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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.