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Finding the Fourth Proportional to 5,253.79, 7,253.19 and 3,487.81

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Solution

The fourth proportional to 5,253.79, 7,253.19 and 3,487.81 is: 4,815.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.79 : 7,253.19 = 3,487.81 : x
  2. Step 2: Convert to fraction form
    5,253.79/7,253.19 = 3,487.81/x
  3. Step 3: Cross multiply
    5,253.79x = 7,253.19 × 3,487.81
  4. Step 4: Simplify right side
    5,253.79x = 25,297,694.91
  5. Step 5: Solve for x
    x = 25,297,694.91/5,253.79
  6. Step 6: Final answer
    x = 4,815.14

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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.