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Finding the Fourth Proportional to 2,391.50, 3,586.34 and 930.46

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Solution

The fourth proportional to 2,391.50, 3,586.34 and 930.46 is: 1,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.50 : 3,586.34 = 930.46 : x
  2. Step 2: Convert to fraction form
    2,391.50/3,586.34 = 930.46/x
  3. Step 3: Cross multiply
    2,391.50x = 3,586.34 × 930.46
  4. Step 4: Simplify right side
    2,391.50x = 3,336,945.92
  5. Step 5: Solve for x
    x = 3,336,945.92/2,391.50
  6. Step 6: Final answer
    x = 1,395.34

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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.