Home / 5,457.15-8,185.71-3,607.86

Finding the Fourth Proportional to 5,457.15, 8,185.71 and 3,607.86

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Solution

The fourth proportional to 5,457.15, 8,185.71 and 3,607.86 is: 5,411.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.15 : 8,185.71 = 3,607.86 : x
  2. Step 2: Convert to fraction form
    5,457.15/8,185.71 = 3,607.86/x
  3. Step 3: Cross multiply
    5,457.15x = 8,185.71 × 3,607.86
  4. Step 4: Simplify right side
    5,457.15x = 29,532,895.68
  5. Step 5: Solve for x
    x = 29,532,895.68/5,457.15
  6. Step 6: Final answer
    x = 5,411.78

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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.