Home / 7,827.96-11,750.15-4,129.20

Finding the Fourth Proportional to 7,827.96, 11,750.15 and 4,129.20

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Solution

The fourth proportional to 7,827.96, 11,750.15 and 4,129.20 is: 6,198.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,827.96 : 11,750.15 = 4,129.20 : x
  2. Step 2: Convert to fraction form
    7,827.96/11,750.15 = 4,129.20/x
  3. Step 3: Cross multiply
    7,827.96x = 11,750.15 × 4,129.20
  4. Step 4: Simplify right side
    7,827.96x = 48,518,719.38
  5. Step 5: Solve for x
    x = 48,518,719.38/7,827.96
  6. Step 6: Final answer
    x = 6,198.13

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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.