Home / 5,245.89-7,239.39-2,887.98

Finding the Fourth Proportional to 5,245.89, 7,239.39 and 2,887.98

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Solution

The fourth proportional to 5,245.89, 7,239.39 and 2,887.98 is: 3,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.89 : 7,239.39 = 2,887.98 : x
  2. Step 2: Convert to fraction form
    5,245.89/7,239.39 = 2,887.98/x
  3. Step 3: Cross multiply
    5,245.89x = 7,239.39 × 2,887.98
  4. Step 4: Simplify right side
    5,245.89x = 20,907,213.53
  5. Step 5: Solve for x
    x = 20,907,213.53/5,245.89
  6. Step 6: Final answer
    x = 3,985.45

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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.