Home / 2,445.67-3,666.49-1,129.14

Finding the Fourth Proportional to 2,445.67, 3,666.49 and 1,129.14

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Solution

The fourth proportional to 2,445.67, 3,666.49 and 1,129.14 is: 1,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.67 : 3,666.49 = 1,129.14 : x
  2. Step 2: Convert to fraction form
    2,445.67/3,666.49 = 1,129.14/x
  3. Step 3: Cross multiply
    2,445.67x = 3,666.49 × 1,129.14
  4. Step 4: Simplify right side
    2,445.67x = 4,139,980.87
  5. Step 5: Solve for x
    x = 4,139,980.87/2,445.67
  6. Step 6: Final answer
    x = 1,692.78

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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.