Home / 5,407.29-8,115.53-2,122.67

Finding the Fourth Proportional to 5,407.29, 8,115.53 and 2,122.67

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Solution

The fourth proportional to 5,407.29, 8,115.53 and 2,122.67 is: 3,185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.29 : 8,115.53 = 2,122.67 : x
  2. Step 2: Convert to fraction form
    5,407.29/8,115.53 = 2,122.67/x
  3. Step 3: Cross multiply
    5,407.29x = 8,115.53 × 2,122.67
  4. Step 4: Simplify right side
    5,407.29x = 17,226,601.74
  5. Step 5: Solve for x
    x = 17,226,601.74/5,407.29
  6. Step 6: Final answer
    x = 3,185.81

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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.