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Finding the Fourth Proportional to 3,338.93, 5,005.63 and 1,257.79

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Solution

The fourth proportional to 3,338.93, 5,005.63 and 1,257.79 is: 1,885.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,338.93 : 5,005.63 = 1,257.79 : x
  2. Step 2: Convert to fraction form
    3,338.93/5,005.63 = 1,257.79/x
  3. Step 3: Cross multiply
    3,338.93x = 5,005.63 × 1,257.79
  4. Step 4: Simplify right side
    3,338.93x = 6,296,031.36
  5. Step 5: Solve for x
    x = 6,296,031.36/3,338.93
  6. Step 6: Final answer
    x = 1,885.64

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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.