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Finding the Fourth Proportional to 4,661.78, 6,434.62 and 2,774.70

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Solution

The fourth proportional to 4,661.78, 6,434.62 and 2,774.70 is: 3,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,661.78 : 6,434.62 = 2,774.70 : x
  2. Step 2: Convert to fraction form
    4,661.78/6,434.62 = 2,774.70/x
  3. Step 3: Cross multiply
    4,661.78x = 6,434.62 × 2,774.70
  4. Step 4: Simplify right side
    4,661.78x = 17,854,140.11
  5. Step 5: Solve for x
    x = 17,854,140.11/4,661.78
  6. Step 6: Final answer
    x = 3,829.90

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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.