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Finding the Fourth Proportional to 4,717.79, 7,072.02 and 2,639.55

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Solution

The fourth proportional to 4,717.79, 7,072.02 and 2,639.55 is: 3,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,717.79 : 7,072.02 = 2,639.55 : x
  2. Step 2: Convert to fraction form
    4,717.79/7,072.02 = 2,639.55/x
  3. Step 3: Cross multiply
    4,717.79x = 7,072.02 × 2,639.55
  4. Step 4: Simplify right side
    4,717.79x = 18,666,950.39
  5. Step 5: Solve for x
    x = 18,666,950.39/4,717.79
  6. Step 6: Final answer
    x = 3,956.72

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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.