Home / 5,487.79-8,230.21-1,538.82

Finding the Fourth Proportional to 5,487.79, 8,230.21 and 1,538.82

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Solution

The fourth proportional to 5,487.79, 8,230.21 and 1,538.82 is: 2,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.79 : 8,230.21 = 1,538.82 : x
  2. Step 2: Convert to fraction form
    5,487.79/8,230.21 = 1,538.82/x
  3. Step 3: Cross multiply
    5,487.79x = 8,230.21 × 1,538.82
  4. Step 4: Simplify right side
    5,487.79x = 12,664,811.75
  5. Step 5: Solve for x
    x = 12,664,811.75/5,487.79
  6. Step 6: Final answer
    x = 2,307.82

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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.