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Finding the Fourth Proportional to 3,132.07, 4,697.74 and 940.80

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Solution

The fourth proportional to 3,132.07, 4,697.74 and 940.80 is: 1,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.07 : 4,697.74 = 940.80 : x
  2. Step 2: Convert to fraction form
    3,132.07/4,697.74 = 940.80/x
  3. Step 3: Cross multiply
    3,132.07x = 4,697.74 × 940.80
  4. Step 4: Simplify right side
    3,132.07x = 4,419,633.79
  5. Step 5: Solve for x
    x = 4,419,633.79/3,132.07
  6. Step 6: Final answer
    x = 1,411.09

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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.