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Finding the Fourth Proportional to 3,485.79, 4,803.30 and 3,239.73

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Solution

The fourth proportional to 3,485.79, 4,803.30 and 3,239.73 is: 4,464.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.79 : 4,803.30 = 3,239.73 : x
  2. Step 2: Convert to fraction form
    3,485.79/4,803.30 = 3,239.73/x
  3. Step 3: Cross multiply
    3,485.79x = 4,803.30 × 3,239.73
  4. Step 4: Simplify right side
    3,485.79x = 15,561,395.11
  5. Step 5: Solve for x
    x = 15,561,395.11/3,485.79
  6. Step 6: Final answer
    x = 4,464.24

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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.