Home / 7,856.31-11,774.87-3,690.76

Finding the Fourth Proportional to 7,856.31, 11,774.87 and 3,690.76

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Solution

The fourth proportional to 7,856.31, 11,774.87 and 3,690.76 is: 5,531.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.31 : 11,774.87 = 3,690.76 : x
  2. Step 2: Convert to fraction form
    7,856.31/11,774.87 = 3,690.76/x
  3. Step 3: Cross multiply
    7,856.31x = 11,774.87 × 3,690.76
  4. Step 4: Simplify right side
    7,856.31x = 43,458,219.20
  5. Step 5: Solve for x
    x = 43,458,219.20/7,856.31
  6. Step 6: Final answer
    x = 5,531.63

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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.