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Finding the Fourth Proportional to 2,933.66, 4,401.17 and 985.81

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Solution

The fourth proportional to 2,933.66, 4,401.17 and 985.81 is: 1,478.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,933.66 : 4,401.17 = 985.81 : x
  2. Step 2: Convert to fraction form
    2,933.66/4,401.17 = 985.81/x
  3. Step 3: Cross multiply
    2,933.66x = 4,401.17 × 985.81
  4. Step 4: Simplify right side
    2,933.66x = 4,338,717.40
  5. Step 5: Solve for x
    x = 4,338,717.40/2,933.66
  6. Step 6: Final answer
    x = 1,478.94

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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.