Home / 4,210.24-6,315.38-1,288.54

Finding the Fourth Proportional to 4,210.24, 6,315.38 and 1,288.54

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Solution

The fourth proportional to 4,210.24, 6,315.38 and 1,288.54 is: 1,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,210.24 : 6,315.38 = 1,288.54 : x
  2. Step 2: Convert to fraction form
    4,210.24/6,315.38 = 1,288.54/x
  3. Step 3: Cross multiply
    4,210.24x = 6,315.38 × 1,288.54
  4. Step 4: Simplify right side
    4,210.24x = 8,137,619.75
  5. Step 5: Solve for x
    x = 8,137,619.75/4,210.24
  6. Step 6: Final answer
    x = 1,932.82

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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.