Home / 5,128.10-7,691.84-1,840.31

Finding the Fourth Proportional to 5,128.10, 7,691.84 and 1,840.31

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Solution

The fourth proportional to 5,128.10, 7,691.84 and 1,840.31 is: 2,760.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.10 : 7,691.84 = 1,840.31 : x
  2. Step 2: Convert to fraction form
    5,128.10/7,691.84 = 1,840.31/x
  3. Step 3: Cross multiply
    5,128.10x = 7,691.84 × 1,840.31
  4. Step 4: Simplify right side
    5,128.10x = 14,155,370.07
  5. Step 5: Solve for x
    x = 14,155,370.07/5,128.10
  6. Step 6: Final answer
    x = 2,760.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.