Home / 5,620.86-8,430.21-2,110.71

Finding the Fourth Proportional to 5,620.86, 8,430.21 and 2,110.71

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Solution

The fourth proportional to 5,620.86, 8,430.21 and 2,110.71 is: 3,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.86 : 8,430.21 = 2,110.71 : x
  2. Step 2: Convert to fraction form
    5,620.86/8,430.21 = 2,110.71/x
  3. Step 3: Cross multiply
    5,620.86x = 8,430.21 × 2,110.71
  4. Step 4: Simplify right side
    5,620.86x = 17,793,728.55
  5. Step 5: Solve for x
    x = 17,793,728.55/5,620.86
  6. Step 6: Final answer
    x = 3,165.66

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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.