Home / 4,209.78-6,315.50-1,288.52

Finding the Fourth Proportional to 4,209.78, 6,315.50 and 1,288.52

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Solution

The fourth proportional to 4,209.78, 6,315.50 and 1,288.52 is: 1,933.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.78 : 6,315.50 = 1,288.52 : x
  2. Step 2: Convert to fraction form
    4,209.78/6,315.50 = 1,288.52/x
  3. Step 3: Cross multiply
    4,209.78x = 6,315.50 × 1,288.52
  4. Step 4: Simplify right side
    4,209.78x = 8,137,648.06
  5. Step 5: Solve for x
    x = 8,137,648.06/4,209.78
  6. Step 6: Final answer
    x = 1,933.03

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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.