Home / 5,245.39-7,238.64-2,887.48

Finding the Fourth Proportional to 5,245.39, 7,238.64 and 2,887.48

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Solution

The fourth proportional to 5,245.39, 7,238.64 and 2,887.48 is: 3,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.39 : 7,238.64 = 2,887.48 : x
  2. Step 2: Convert to fraction form
    5,245.39/7,238.64 = 2,887.48/x
  3. Step 3: Cross multiply
    5,245.39x = 7,238.64 × 2,887.48
  4. Step 4: Simplify right side
    5,245.39x = 20,901,428.23
  5. Step 5: Solve for x
    x = 20,901,428.23/5,245.39
  6. Step 6: Final answer
    x = 3,984.72

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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.