Home / 3,290.19-4,932.40-1,239.63

Finding the Fourth Proportional to 3,290.19, 4,932.40 and 1,239.63

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Solution

The fourth proportional to 3,290.19, 4,932.40 and 1,239.63 is: 1,858.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.19 : 4,932.40 = 1,239.63 : x
  2. Step 2: Convert to fraction form
    3,290.19/4,932.40 = 1,239.63/x
  3. Step 3: Cross multiply
    3,290.19x = 4,932.40 × 1,239.63
  4. Step 4: Simplify right side
    3,290.19x = 6,114,351.01
  5. Step 5: Solve for x
    x = 6,114,351.01/3,290.19
  6. Step 6: Final answer
    x = 1,858.36

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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.