Home / 5,489.28-8,184.96-4,878.72

Finding the Fourth Proportional to 5,489.28, 8,184.96 and 4,878.72

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Solution

The fourth proportional to 5,489.28, 8,184.96 and 4,878.72 is: 7,274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.28 : 8,184.96 = 4,878.72 : x
  2. Step 2: Convert to fraction form
    5,489.28/8,184.96 = 4,878.72/x
  3. Step 3: Cross multiply
    5,489.28x = 8,184.96 × 4,878.72
  4. Step 4: Simplify right side
    5,489.28x = 39,932,128.05
  5. Step 5: Solve for x
    x = 39,932,128.05/5,489.28
  6. Step 6: Final answer
    x = 7,274.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.