Home / 5,245.12-7,238.24-2,887.26

Finding the Fourth Proportional to 5,245.12, 7,238.24 and 2,887.26

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Solution

The fourth proportional to 5,245.12, 7,238.24 and 2,887.26 is: 3,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.12 : 7,238.24 = 2,887.26 : x
  2. Step 2: Convert to fraction form
    5,245.12/7,238.24 = 2,887.26/x
  3. Step 3: Cross multiply
    5,245.12x = 7,238.24 × 2,887.26
  4. Step 4: Simplify right side
    5,245.12x = 20,898,655.48
  5. Step 5: Solve for x
    x = 20,898,655.48/5,245.12
  6. Step 6: Final answer
    x = 3,984.40

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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.