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Finding the Fourth Proportional to 2,751.66, 4,128.14 and 902.93

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Solution

The fourth proportional to 2,751.66, 4,128.14 and 902.93 is: 1,354.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.66 : 4,128.14 = 902.93 : x
  2. Step 2: Convert to fraction form
    2,751.66/4,128.14 = 902.93/x
  3. Step 3: Cross multiply
    2,751.66x = 4,128.14 × 902.93
  4. Step 4: Simplify right side
    2,751.66x = 3,727,396.29
  5. Step 5: Solve for x
    x = 3,727,396.29/2,751.66
  6. Step 6: Final answer
    x = 1,354.60

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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.