Home / 1,487.88-2,231.60-938.39

Finding the Fourth Proportional to 1,487.88, 2,231.60 and 938.39

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Solution

The fourth proportional to 1,487.88, 2,231.60 and 938.39 is: 1,407.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.88 : 2,231.60 = 938.39 : x
  2. Step 2: Convert to fraction form
    1,487.88/2,231.60 = 938.39/x
  3. Step 3: Cross multiply
    1,487.88x = 2,231.60 × 938.39
  4. Step 4: Simplify right side
    1,487.88x = 2,094,095.27
  5. Step 5: Solve for x
    x = 2,094,095.27/1,487.88
  6. Step 6: Final answer
    x = 1,407.44

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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.