Home / 7,856.18-11,784.26-2,012.80

Finding the Fourth Proportional to 7,856.18, 11,784.26 and 2,012.80

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Solution

The fourth proportional to 7,856.18, 11,784.26 and 2,012.80 is: 3,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.18 : 11,784.26 = 2,012.80 : x
  2. Step 2: Convert to fraction form
    7,856.18/11,784.26 = 2,012.80/x
  3. Step 3: Cross multiply
    7,856.18x = 11,784.26 × 2,012.80
  4. Step 4: Simplify right side
    7,856.18x = 23,719,358.53
  5. Step 5: Solve for x
    x = 23,719,358.53/7,856.18
  6. Step 6: Final answer
    x = 3,019.20

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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.