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Finding the Fourth Proportional to 2,317, 3,197.46 and 1,385.72

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Solution

The fourth proportional to 2,317, 3,197.46 and 1,385.72 is: 1,912.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,317 : 3,197.46 = 1,385.72 : x
  2. Step 2: Convert to fraction form
    2,317/3,197.46 = 1,385.72/x
  3. Step 3: Cross multiply
    2,317x = 3,197.46 × 1,385.72
  4. Step 4: Simplify right side
    2,317x = 4,430,784.27
  5. Step 5: Solve for x
    x = 4,430,784.27/2,317
  6. Step 6: Final answer
    x = 1,912.29

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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.