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Finding the Fourth Proportional to 4,787.95, 7,188.66 and 2,449.63

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Solution

The fourth proportional to 4,787.95, 7,188.66 and 2,449.63 is: 3,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.95 : 7,188.66 = 2,449.63 : x
  2. Step 2: Convert to fraction form
    4,787.95/7,188.66 = 2,449.63/x
  3. Step 3: Cross multiply
    4,787.95x = 7,188.66 × 2,449.63
  4. Step 4: Simplify right side
    4,787.95x = 17,609,576.07
  5. Step 5: Solve for x
    x = 17,609,576.07/4,787.95
  6. Step 6: Final answer
    x = 3,677.89

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1.5x scale

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.