Home / 7,899.59-11,827.82-5,119.40

Finding the Fourth Proportional to 7,899.59, 11,827.82 and 5,119.40

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Solution

The fourth proportional to 7,899.59, 11,827.82 and 5,119.40 is: 7,665.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.59 : 11,827.82 = 5,119.40 : x
  2. Step 2: Convert to fraction form
    7,899.59/11,827.82 = 5,119.40/x
  3. Step 3: Cross multiply
    7,899.59x = 11,827.82 × 5,119.40
  4. Step 4: Simplify right side
    7,899.59x = 60,551,384.08
  5. Step 5: Solve for x
    x = 60,551,384.08/7,899.59
  6. Step 6: Final answer
    x = 7,665.13

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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.