Home / 3,238.20-4,857.80-929.70

Finding the Fourth Proportional to 3,238.20, 4,857.80 and 929.70

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Solution

The fourth proportional to 3,238.20, 4,857.80 and 929.70 is: 1,394.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.20 : 4,857.80 = 929.70 : x
  2. Step 2: Convert to fraction form
    3,238.20/4,857.80 = 929.70/x
  3. Step 3: Cross multiply
    3,238.20x = 4,857.80 × 929.70
  4. Step 4: Simplify right side
    3,238.20x = 4,516,296.66
  5. Step 5: Solve for x
    x = 4,516,296.66/3,238.20
  6. Step 6: Final answer
    x = 1,394.69

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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.