Home / 5,636.79-7,780.05-3,397.95

Finding the Fourth Proportional to 5,636.79, 7,780.05 and 3,397.95

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Solution

The fourth proportional to 5,636.79, 7,780.05 and 3,397.95 is: 4,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.79 : 7,780.05 = 3,397.95 : x
  2. Step 2: Convert to fraction form
    5,636.79/7,780.05 = 3,397.95/x
  3. Step 3: Cross multiply
    5,636.79x = 7,780.05 × 3,397.95
  4. Step 4: Simplify right side
    5,636.79x = 26,436,220.90
  5. Step 5: Solve for x
    x = 26,436,220.90/5,636.79
  6. Step 6: Final answer
    x = 4,689.94

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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.