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Finding the Fourth Proportional to 2,752.11, 4,128.02 and 902.99

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Solution

The fourth proportional to 2,752.11, 4,128.02 and 902.99 is: 1,354.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,752.11 : 4,128.02 = 902.99 : x
  2. Step 2: Convert to fraction form
    2,752.11/4,128.02 = 902.99/x
  3. Step 3: Cross multiply
    2,752.11x = 4,128.02 × 902.99
  4. Step 4: Simplify right side
    2,752.11x = 3,727,542.40
  5. Step 5: Solve for x
    x = 3,727,542.40/2,752.11
  6. Step 6: Final answer
    x = 1,354.43

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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.