Home / 5,245.50-7,238.79-2,887.63

Finding the Fourth Proportional to 5,245.50, 7,238.79 and 2,887.63

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Solution

The fourth proportional to 5,245.50, 7,238.79 and 2,887.63 is: 3,984.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.50 : 7,238.79 = 2,887.63 : x
  2. Step 2: Convert to fraction form
    5,245.50/7,238.79 = 2,887.63/x
  3. Step 3: Cross multiply
    5,245.50x = 7,238.79 × 2,887.63
  4. Step 4: Simplify right side
    5,245.50x = 20,902,947.17
  5. Step 5: Solve for x
    x = 20,902,947.17/5,245.50
  6. Step 6: Final answer
    x = 3,984.93

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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.