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Finding the Fourth Proportional to 5,661.88, 7,813.02 and 3,144.00

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Solution

The fourth proportional to 5,661.88, 7,813.02 and 3,144.00 is: 4,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.88 : 7,813.02 = 3,144.00 : x
  2. Step 2: Convert to fraction form
    5,661.88/7,813.02 = 3,144.00/x
  3. Step 3: Cross multiply
    5,661.88x = 7,813.02 × 3,144.00
  4. Step 4: Simplify right side
    5,661.88x = 24,564,132.02
  5. Step 5: Solve for x
    x = 24,564,132.02/5,661.88
  6. Step 6: Final answer
    x = 4,338.51

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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.