Home / 5,686.75-8,531.07-1,790.38

Finding the Fourth Proportional to 5,686.75, 8,531.07 and 1,790.38

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Solution

The fourth proportional to 5,686.75, 8,531.07 and 1,790.38 is: 2,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.75 : 8,531.07 = 1,790.38 : x
  2. Step 2: Convert to fraction form
    5,686.75/8,531.07 = 1,790.38/x
  3. Step 3: Cross multiply
    5,686.75x = 8,531.07 × 1,790.38
  4. Step 4: Simplify right side
    5,686.75x = 15,273,857.11
  5. Step 5: Solve for x
    x = 15,273,857.11/5,686.75
  6. Step 6: Final answer
    x = 2,685.87

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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.