Home / 2,886.34-4,330.12-938.39

Finding the Fourth Proportional to 2,886.34, 4,330.12 and 938.39

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Solution

The fourth proportional to 2,886.34, 4,330.12 and 938.39 is: 1,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.34 : 4,330.12 = 938.39 : x
  2. Step 2: Convert to fraction form
    2,886.34/4,330.12 = 938.39/x
  3. Step 3: Cross multiply
    2,886.34x = 4,330.12 × 938.39
  4. Step 4: Simplify right side
    2,886.34x = 4,063,343.43
  5. Step 5: Solve for x
    x = 4,063,343.43/2,886.34
  6. Step 6: Final answer
    x = 1,407.78

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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.