Home / 5,486.70-8,217.90-4,871.10

Finding the Fourth Proportional to 5,486.70, 8,217.90 and 4,871.10

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Solution

The fourth proportional to 5,486.70, 8,217.90 and 4,871.10 is: 7,295.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.70 : 8,217.90 = 4,871.10 : x
  2. Step 2: Convert to fraction form
    5,486.70/8,217.90 = 4,871.10/x
  3. Step 3: Cross multiply
    5,486.70x = 8,217.90 × 4,871.10
  4. Step 4: Simplify right side
    5,486.70x = 40,030,212.69
  5. Step 5: Solve for x
    x = 40,030,212.69/5,486.70
  6. Step 6: Final answer
    x = 7,295.86

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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.