Home / 5,287.12-7,291.19-3,162.30

Finding the Fourth Proportional to 5,287.12, 7,291.19 and 3,162.30

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Solution

The fourth proportional to 5,287.12, 7,291.19 and 3,162.30 is: 4,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.12 : 7,291.19 = 3,162.30 : x
  2. Step 2: Convert to fraction form
    5,287.12/7,291.19 = 3,162.30/x
  3. Step 3: Cross multiply
    5,287.12x = 7,291.19 × 3,162.30
  4. Step 4: Simplify right side
    5,287.12x = 23,056,914.33
  5. Step 5: Solve for x
    x = 23,056,914.33/5,287.12
  6. Step 6: Final answer
    x = 4,360.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.