Home / 5,411.73-8,120.76-2,291.55

Finding the Fourth Proportional to 5,411.73, 8,120.76 and 2,291.55

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Solution

The fourth proportional to 5,411.73, 8,120.76 and 2,291.55 is: 3,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.73 : 8,120.76 = 2,291.55 : x
  2. Step 2: Convert to fraction form
    5,411.73/8,120.76 = 2,291.55/x
  3. Step 3: Cross multiply
    5,411.73x = 8,120.76 × 2,291.55
  4. Step 4: Simplify right side
    5,411.73x = 18,609,127.58
  5. Step 5: Solve for x
    x = 18,609,127.58/5,411.73
  6. Step 6: Final answer
    x = 3,438.67

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1.5x scale

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.