Home / 5,678.30-8,516.16-1,781.78

Finding the Fourth Proportional to 5,678.30, 8,516.16 and 1,781.78

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Solution

The fourth proportional to 5,678.30, 8,516.16 and 1,781.78 is: 2,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.30 : 8,516.16 = 1,781.78 : x
  2. Step 2: Convert to fraction form
    5,678.30/8,516.16 = 1,781.78/x
  3. Step 3: Cross multiply
    5,678.30x = 8,516.16 × 1,781.78
  4. Step 4: Simplify right side
    5,678.30x = 15,173,923.56
  5. Step 5: Solve for x
    x = 15,173,923.56/5,678.30
  6. Step 6: Final answer
    x = 2,672.27

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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.