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Finding the Fourth Proportional to 4,869.95, 6,720.12 and 2,744.82

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Solution

The fourth proportional to 4,869.95, 6,720.12 and 2,744.82 is: 3,787.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.95 : 6,720.12 = 2,744.82 : x
  2. Step 2: Convert to fraction form
    4,869.95/6,720.12 = 2,744.82/x
  3. Step 3: Cross multiply
    4,869.95x = 6,720.12 × 2,744.82
  4. Step 4: Simplify right side
    4,869.95x = 18,445,519.78
  5. Step 5: Solve for x
    x = 18,445,519.78/4,869.95
  6. Step 6: Final answer
    x = 3,787.62

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1.5x scale

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.