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Finding the Fourth Proportional to 5,145.92, 7,101.65 and 2,907.89

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Solution

The fourth proportional to 5,145.92, 7,101.65 and 2,907.89 is: 4,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.92 : 7,101.65 = 2,907.89 : x
  2. Step 2: Convert to fraction form
    5,145.92/7,101.65 = 2,907.89/x
  3. Step 3: Cross multiply
    5,145.92x = 7,101.65 × 2,907.89
  4. Step 4: Simplify right side
    5,145.92x = 20,650,817.02
  5. Step 5: Solve for x
    x = 20,650,817.02/5,145.92
  6. Step 6: Final answer
    x = 4,013.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.