Home / 5,638.48-7,780.68-3,154

Finding the Fourth Proportional to 5,638.48, 7,780.68 and 3,154

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Solution

The fourth proportional to 5,638.48, 7,780.68 and 3,154 is: 4,352.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.48 : 7,780.68 = 3,154 : x
  2. Step 2: Convert to fraction form
    5,638.48/7,780.68 = 3,154/x
  3. Step 3: Cross multiply
    5,638.48x = 7,780.68 × 3,154
  4. Step 4: Simplify right side
    5,638.48x = 24,540,264.72
  5. Step 5: Solve for x
    x = 24,540,264.72/5,638.48
  6. Step 6: Final answer
    x = 4,352.28

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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.