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Finding the Fourth Proportional to 3,098.83, 4,648.68 and 907.72

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Solution

The fourth proportional to 3,098.83, 4,648.68 and 907.72 is: 1,361.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.83 : 4,648.68 = 907.72 : x
  2. Step 2: Convert to fraction form
    3,098.83/4,648.68 = 907.72/x
  3. Step 3: Cross multiply
    3,098.83x = 4,648.68 × 907.72
  4. Step 4: Simplify right side
    3,098.83x = 4,219,699.81
  5. Step 5: Solve for x
    x = 4,219,699.81/3,098.83
  6. Step 6: Final answer
    x = 1,361.71

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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.