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Finding the Fourth Proportional to 6,961.75, 9,607.61 and 4,130.80

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Solution

The fourth proportional to 6,961.75, 9,607.61 and 4,130.80 is: 5,700.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,961.75 : 9,607.61 = 4,130.80 : x
  2. Step 2: Convert to fraction form
    6,961.75/9,607.61 = 4,130.80/x
  3. Step 3: Cross multiply
    6,961.75x = 9,607.61 × 4,130.80
  4. Step 4: Simplify right side
    6,961.75x = 39,687,115.39
  5. Step 5: Solve for x
    x = 39,687,115.39/6,961.75
  6. Step 6: Final answer
    x = 5,700.74

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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.