Home / 3,110.05-4,664.22-918.55

Finding the Fourth Proportional to 3,110.05, 4,664.22 and 918.55

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Solution

The fourth proportional to 3,110.05, 4,664.22 and 918.55 is: 1,377.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.05 : 4,664.22 = 918.55 : x
  2. Step 2: Convert to fraction form
    3,110.05/4,664.22 = 918.55/x
  3. Step 3: Cross multiply
    3,110.05x = 4,664.22 × 918.55
  4. Step 4: Simplify right side
    3,110.05x = 4,284,319.28
  5. Step 5: Solve for x
    x = 4,284,319.28/3,110.05
  6. Step 6: Final answer
    x = 1,377.57

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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.