Home / 5,415.53-8,123.60-1,519.93

Finding the Fourth Proportional to 5,415.53, 8,123.60 and 1,519.93

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Solution

The fourth proportional to 5,415.53, 8,123.60 and 1,519.93 is: 2,279.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.53 : 8,123.60 = 1,519.93 : x
  2. Step 2: Convert to fraction form
    5,415.53/8,123.60 = 1,519.93/x
  3. Step 3: Cross multiply
    5,415.53x = 8,123.60 × 1,519.93
  4. Step 4: Simplify right side
    5,415.53x = 12,347,286.84
  5. Step 5: Solve for x
    x = 12,347,286.84/5,415.53
  6. Step 6: Final answer
    x = 2,279.98

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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.