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Finding the Fourth Proportional to 3,285.96, 4,929.18 and 945.87

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Solution

The fourth proportional to 3,285.96, 4,929.18 and 945.87 is: 1,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.96 : 4,929.18 = 945.87 : x
  2. Step 2: Convert to fraction form
    3,285.96/4,929.18 = 945.87/x
  3. Step 3: Cross multiply
    3,285.96x = 4,929.18 × 945.87
  4. Step 4: Simplify right side
    3,285.96x = 4,662,363.49
  5. Step 5: Solve for x
    x = 4,662,363.49/3,285.96
  6. Step 6: Final answer
    x = 1,418.87

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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.