Home / 6,078.78-9,117.70-1,918.91

Finding the Fourth Proportional to 6,078.78, 9,117.70 and 1,918.91

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Solution

The fourth proportional to 6,078.78, 9,117.70 and 1,918.91 is: 2,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.78 : 9,117.70 = 1,918.91 : x
  2. Step 2: Convert to fraction form
    6,078.78/9,117.70 = 1,918.91/x
  3. Step 3: Cross multiply
    6,078.78x = 9,117.70 × 1,918.91
  4. Step 4: Simplify right side
    6,078.78x = 17,496,063.70
  5. Step 5: Solve for x
    x = 17,496,063.70/6,078.78
  6. Step 6: Final answer
    x = 2,878.22

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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.