Home / 5,515.22-8,287.23-5,165.30

Finding the Fourth Proportional to 5,515.22, 8,287.23 and 5,165.30

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Solution

The fourth proportional to 5,515.22, 8,287.23 and 5,165.30 is: 7,761.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.22 : 8,287.23 = 5,165.30 : x
  2. Step 2: Convert to fraction form
    5,515.22/8,287.23 = 5,165.30/x
  3. Step 3: Cross multiply
    5,515.22x = 8,287.23 × 5,165.30
  4. Step 4: Simplify right side
    5,515.22x = 42,806,029.12
  5. Step 5: Solve for x
    x = 42,806,029.12/5,515.22
  6. Step 6: Final answer
    x = 7,761.44

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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.