Home / 7,856.36-11,785.28-2,309.70

Finding the Fourth Proportional to 7,856.36, 11,785.28 and 2,309.70

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Solution

The fourth proportional to 7,856.36, 11,785.28 and 2,309.70 is: 3,464.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.36 : 11,785.28 = 2,309.70 : x
  2. Step 2: Convert to fraction form
    7,856.36/11,785.28 = 2,309.70/x
  3. Step 3: Cross multiply
    7,856.36x = 11,785.28 × 2,309.70
  4. Step 4: Simplify right side
    7,856.36x = 27,220,461.22
  5. Step 5: Solve for x
    x = 27,220,461.22/7,856.36
  6. Step 6: Final answer
    x = 3,464.77

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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.