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Finding the Fourth Proportional to 3,057.99, 4,587.18 and 866.53

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Solution

The fourth proportional to 3,057.99, 4,587.18 and 866.53 is: 1,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.99 : 4,587.18 = 866.53 : x
  2. Step 2: Convert to fraction form
    3,057.99/4,587.18 = 866.53/x
  3. Step 3: Cross multiply
    3,057.99x = 4,587.18 × 866.53
  4. Step 4: Simplify right side
    3,057.99x = 3,974,929.09
  5. Step 5: Solve for x
    x = 3,974,929.09/3,057.99
  6. Step 6: Final answer
    x = 1,299.85

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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.