Home / 4,210.63-6,315.87-1,288.86

Finding the Fourth Proportional to 4,210.63, 6,315.87 and 1,288.86

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Solution

The fourth proportional to 4,210.63, 6,315.87 and 1,288.86 is: 1,933.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,210.63 : 6,315.87 = 1,288.86 : x
  2. Step 2: Convert to fraction form
    4,210.63/6,315.87 = 1,288.86/x
  3. Step 3: Cross multiply
    4,210.63x = 6,315.87 × 1,288.86
  4. Step 4: Simplify right side
    4,210.63x = 8,140,288.88
  5. Step 5: Solve for x
    x = 8,140,288.88/4,210.63
  6. Step 6: Final answer
    x = 1,933.27

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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.