Home / 2,638.10-3,953.65-1,402.85

Finding the Fourth Proportional to 2,638.10, 3,953.65 and 1,402.85

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Solution

The fourth proportional to 2,638.10, 3,953.65 and 1,402.85 is: 2,102.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.10 : 3,953.65 = 1,402.85 : x
  2. Step 2: Convert to fraction form
    2,638.10/3,953.65 = 1,402.85/x
  3. Step 3: Cross multiply
    2,638.10x = 3,953.65 × 1,402.85
  4. Step 4: Simplify right side
    2,638.10x = 5,546,354.63
  5. Step 5: Solve for x
    x = 5,546,354.63/2,638.10
  6. Step 6: Final answer
    x = 2,102.41

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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.