Home / 5,388.21-8,081.37-1,439.55

Finding the Fourth Proportional to 5,388.21, 8,081.37 and 1,439.55

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Solution

The fourth proportional to 5,388.21, 8,081.37 and 1,439.55 is: 2,159.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.21 : 8,081.37 = 1,439.55 : x
  2. Step 2: Convert to fraction form
    5,388.21/8,081.37 = 1,439.55/x
  3. Step 3: Cross multiply
    5,388.21x = 8,081.37 × 1,439.55
  4. Step 4: Simplify right side
    5,388.21x = 11,633,536.18
  5. Step 5: Solve for x
    x = 11,633,536.18/5,388.21
  6. Step 6: Final answer
    x = 2,159.07

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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.