Home / 3,110.42-4,665.67-919.17

Finding the Fourth Proportional to 3,110.42, 4,665.67 and 919.17

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Solution

The fourth proportional to 3,110.42, 4,665.67 and 919.17 is: 1,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.42 : 4,665.67 = 919.17 : x
  2. Step 2: Convert to fraction form
    3,110.42/4,665.67 = 919.17/x
  3. Step 3: Cross multiply
    3,110.42x = 4,665.67 × 919.17
  4. Step 4: Simplify right side
    3,110.42x = 4,288,541.60
  5. Step 5: Solve for x
    x = 4,288,541.60/3,110.42
  6. Step 6: Final answer
    x = 1,378.76

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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.