Home / 2,664.64-3,999.84-1,126.72

Finding the Fourth Proportional to 2,664.64, 3,999.84 and 1,126.72

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Solution

The fourth proportional to 2,664.64, 3,999.84 and 1,126.72 is: 1,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.64 : 3,999.84 = 1,126.72 : x
  2. Step 2: Convert to fraction form
    2,664.64/3,999.84 = 1,126.72/x
  3. Step 3: Cross multiply
    2,664.64x = 3,999.84 × 1,126.72
  4. Step 4: Simplify right side
    2,664.64x = 4,506,699.72
  5. Step 5: Solve for x
    x = 4,506,699.72/2,664.64
  6. Step 6: Final answer
    x = 1,691.30

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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.