Home / 4,188.12-6,275.70-1,720.86

Finding the Fourth Proportional to 4,188.12, 6,275.70 and 1,720.86

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Solution

The fourth proportional to 4,188.12, 6,275.70 and 1,720.86 is: 2,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.12 : 6,275.70 = 1,720.86 : x
  2. Step 2: Convert to fraction form
    4,188.12/6,275.70 = 1,720.86/x
  3. Step 3: Cross multiply
    4,188.12x = 6,275.70 × 1,720.86
  4. Step 4: Simplify right side
    4,188.12x = 10,799,601.10
  5. Step 5: Solve for x
    x = 10,799,601.10/4,188.12
  6. Step 6: Final answer
    x = 2,578.63

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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.