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Finding the Fourth Proportional to 4,609.59, 6,914.81 and 1,687.11

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Solution

The fourth proportional to 4,609.59, 6,914.81 and 1,687.11 is: 2,530.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,609.59 : 6,914.81 = 1,687.11 : x
  2. Step 2: Convert to fraction form
    4,609.59/6,914.81 = 1,687.11/x
  3. Step 3: Cross multiply
    4,609.59x = 6,914.81 × 1,687.11
  4. Step 4: Simplify right side
    4,609.59x = 11,666,045.10
  5. Step 5: Solve for x
    x = 11,666,045.10/4,609.59
  6. Step 6: Final answer
    x = 2,530.82

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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.