Home / 5,245.34-7,238.51-2,887.43

Finding the Fourth Proportional to 5,245.34, 7,238.51 and 2,887.43

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Solution

The fourth proportional to 5,245.34, 7,238.51 and 2,887.43 is: 3,984.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.34 : 7,238.51 = 2,887.43 : x
  2. Step 2: Convert to fraction form
    5,245.34/7,238.51 = 2,887.43/x
  3. Step 3: Cross multiply
    5,245.34x = 7,238.51 × 2,887.43
  4. Step 4: Simplify right side
    5,245.34x = 20,900,640.30
  5. Step 5: Solve for x
    x = 20,900,640.30/5,245.34
  6. Step 6: Final answer
    x = 3,984.61

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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.