Home / 5,018.43-6,918.78-4,118.85

Finding the Fourth Proportional to 5,018.43, 6,918.78 and 4,118.85

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Solution

The fourth proportional to 5,018.43, 6,918.78 and 4,118.85 is: 5,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,018.43 : 6,918.78 = 4,118.85 : x
  2. Step 2: Convert to fraction form
    5,018.43/6,918.78 = 4,118.85/x
  3. Step 3: Cross multiply
    5,018.43x = 6,918.78 × 4,118.85
  4. Step 4: Simplify right side
    5,018.43x = 28,497,417.00
  5. Step 5: Solve for x
    x = 28,497,417.00/5,018.43
  6. Step 6: Final answer
    x = 5,678.55

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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.