Home / 5,715.64-8,575.70-1,820.60

Finding the Fourth Proportional to 5,715.64, 8,575.70 and 1,820.60

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Solution

The fourth proportional to 5,715.64, 8,575.70 and 1,820.60 is: 2,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.64 : 8,575.70 = 1,820.60 : x
  2. Step 2: Convert to fraction form
    5,715.64/8,575.70 = 1,820.60/x
  3. Step 3: Cross multiply
    5,715.64x = 8,575.70 × 1,820.60
  4. Step 4: Simplify right side
    5,715.64x = 15,612,919.42
  5. Step 5: Solve for x
    x = 15,612,919.42/5,715.64
  6. Step 6: Final answer
    x = 2,731.61

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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.