Home / 5,810.80-8,716.20-2,117.20

Finding the Fourth Proportional to 5,810.80, 8,716.20 and 2,117.20

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Solution

The fourth proportional to 5,810.80, 8,716.20 and 2,117.20 is: 3,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,810.80 : 8,716.20 = 2,117.20 : x
  2. Step 2: Convert to fraction form
    5,810.80/8,716.20 = 2,117.20/x
  3. Step 3: Cross multiply
    5,810.80x = 8,716.20 × 2,117.20
  4. Step 4: Simplify right side
    5,810.80x = 18,453,938.64
  5. Step 5: Solve for x
    x = 18,453,938.64/5,810.80
  6. Step 6: Final answer
    x = 3,175.80

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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.