Home / 2,887.34-4,331.62-939.39

Finding the Fourth Proportional to 2,887.34, 4,331.62 and 939.39

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Solution

The fourth proportional to 2,887.34, 4,331.62 and 939.39 is: 1,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.34 : 4,331.62 = 939.39 : x
  2. Step 2: Convert to fraction form
    2,887.34/4,331.62 = 939.39/x
  3. Step 3: Cross multiply
    2,887.34x = 4,331.62 × 939.39
  4. Step 4: Simplify right side
    2,887.34x = 4,069,080.51
  5. Step 5: Solve for x
    x = 4,069,080.51/2,887.34
  6. Step 6: Final answer
    x = 1,409.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.