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Finding the Fourth Proportional to 3,175.07, 4,762.53 and 866.57

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Solution

The fourth proportional to 3,175.07, 4,762.53 and 866.57 is: 1,299.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.07 : 4,762.53 = 866.57 : x
  2. Step 2: Convert to fraction form
    3,175.07/4,762.53 = 866.57/x
  3. Step 3: Cross multiply
    3,175.07x = 4,762.53 × 866.57
  4. Step 4: Simplify right side
    3,175.07x = 4,127,041.81
  5. Step 5: Solve for x
    x = 4,127,041.81/3,175.07
  6. Step 6: Final answer
    x = 1,299.83

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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.