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Finding the Fourth Proportional to 3,011.57, 4,515.73 and 930.68

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Solution

The fourth proportional to 3,011.57, 4,515.73 and 930.68 is: 1,395.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.57 : 4,515.73 = 930.68 : x
  2. Step 2: Convert to fraction form
    3,011.57/4,515.73 = 930.68/x
  3. Step 3: Cross multiply
    3,011.57x = 4,515.73 × 930.68
  4. Step 4: Simplify right side
    3,011.57x = 4,202,696.86
  5. Step 5: Solve for x
    x = 4,202,696.86/3,011.57
  6. Step 6: Final answer
    x = 1,395.52

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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.