Home / 5,781.56-8,671.64-1,621.86

Finding the Fourth Proportional to 5,781.56, 8,671.64 and 1,621.86

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Solution

The fourth proportional to 5,781.56, 8,671.64 and 1,621.86 is: 2,432.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.56 : 8,671.64 = 1,621.86 : x
  2. Step 2: Convert to fraction form
    5,781.56/8,671.64 = 1,621.86/x
  3. Step 3: Cross multiply
    5,781.56x = 8,671.64 × 1,621.86
  4. Step 4: Simplify right side
    5,781.56x = 14,064,177.94
  5. Step 5: Solve for x
    x = 14,064,177.94/5,781.56
  6. Step 6: Final answer
    x = 2,432.59

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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.