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Finding the Fourth Proportional to 3,057.50, 4,586.22 and 865.94

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Solution

The fourth proportional to 3,057.50, 4,586.22 and 865.94 is: 1,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.50 : 4,586.22 = 865.94 : x
  2. Step 2: Convert to fraction form
    3,057.50/4,586.22 = 865.94/x
  3. Step 3: Cross multiply
    3,057.50x = 4,586.22 × 865.94
  4. Step 4: Simplify right side
    3,057.50x = 3,971,391.35
  5. Step 5: Solve for x
    x = 3,971,391.35/3,057.50
  6. Step 6: Final answer
    x = 1,298.90

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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.