Home / 3,591.76-5,378.28-1,856.56

Finding the Fourth Proportional to 3,591.76, 5,378.28 and 1,856.56

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Solution

The fourth proportional to 3,591.76, 5,378.28 and 1,856.56 is: 2,780.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.76 : 5,378.28 = 1,856.56 : x
  2. Step 2: Convert to fraction form
    3,591.76/5,378.28 = 1,856.56/x
  3. Step 3: Cross multiply
    3,591.76x = 5,378.28 × 1,856.56
  4. Step 4: Simplify right side
    3,591.76x = 9,985,099.52
  5. Step 5: Solve for x
    x = 9,985,099.52/3,591.76
  6. Step 6: Final answer
    x = 2,780.00

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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.