Home / 5,811.60-8,021.16-3,689.65

Finding the Fourth Proportional to 5,811.60, 8,021.16 and 3,689.65

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Solution

The fourth proportional to 5,811.60, 8,021.16 and 3,689.65 is: 5,092.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.60 : 8,021.16 = 3,689.65 : x
  2. Step 2: Convert to fraction form
    5,811.60/8,021.16 = 3,689.65/x
  3. Step 3: Cross multiply
    5,811.60x = 8,021.16 × 3,689.65
  4. Step 4: Simplify right side
    5,811.60x = 29,595,272.99
  5. Step 5: Solve for x
    x = 29,595,272.99/5,811.60
  6. Step 6: Final answer
    x = 5,092.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.