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Finding the Fourth Proportional to 7,135.75, 10,703.76 and 1,941.76

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Solution

The fourth proportional to 7,135.75, 10,703.76 and 1,941.76 is: 2,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.75 : 10,703.76 = 1,941.76 : x
  2. Step 2: Convert to fraction form
    7,135.75/10,703.76 = 1,941.76/x
  3. Step 3: Cross multiply
    7,135.75x = 10,703.76 × 1,941.76
  4. Step 4: Simplify right side
    7,135.75x = 20,784,133.02
  5. Step 5: Solve for x
    x = 20,784,133.02/7,135.75
  6. Step 6: Final answer
    x = 2,912.68

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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.