Home / 4,239.78-6,360.30-1,318.32

Finding the Fourth Proportional to 4,239.78, 6,360.30 and 1,318.32

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Solution

The fourth proportional to 4,239.78, 6,360.30 and 1,318.32 is: 1,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239.78 : 6,360.30 = 1,318.32 : x
  2. Step 2: Convert to fraction form
    4,239.78/6,360.30 = 1,318.32/x
  3. Step 3: Cross multiply
    4,239.78x = 6,360.30 × 1,318.32
  4. Step 4: Simplify right side
    4,239.78x = 8,384,910.70
  5. Step 5: Solve for x
    x = 8,384,910.70/4,239.78
  6. Step 6: Final answer
    x = 1,977.68

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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.