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Finding the Fourth Proportional to 3,250.80, 4,877.40 and 3,130.80

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Solution

The fourth proportional to 3,250.80, 4,877.40 and 3,130.80 is: 4,697.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,250.80 : 4,877.40 = 3,130.80 : x
  2. Step 2: Convert to fraction form
    3,250.80/4,877.40 = 3,130.80/x
  3. Step 3: Cross multiply
    3,250.80x = 4,877.40 × 3,130.80
  4. Step 4: Simplify right side
    3,250.80x = 15,270,163.92
  5. Step 5: Solve for x
    x = 15,270,163.92/3,250.80
  6. Step 6: Final answer
    x = 4,697.36

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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.