Home / 5,435.85-8,156.86-2,315.53

Finding the Fourth Proportional to 5,435.85, 8,156.86 and 2,315.53

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Solution

The fourth proportional to 5,435.85, 8,156.86 and 2,315.53 is: 3,474.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,435.85 : 8,156.86 = 2,315.53 : x
  2. Step 2: Convert to fraction form
    5,435.85/8,156.86 = 2,315.53/x
  3. Step 3: Cross multiply
    5,435.85x = 8,156.86 × 2,315.53
  4. Step 4: Simplify right side
    5,435.85x = 18,887,494.80
  5. Step 5: Solve for x
    x = 18,887,494.80/5,435.85
  6. Step 6: Final answer
    x = 3,474.61

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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.