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Finding the Fourth Proportional to 2,856.64, 4,284.93 and 804.64

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Solution

The fourth proportional to 2,856.64, 4,284.93 and 804.64 is: 1,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.64 : 4,284.93 = 804.64 : x
  2. Step 2: Convert to fraction form
    2,856.64/4,284.93 = 804.64/x
  3. Step 3: Cross multiply
    2,856.64x = 4,284.93 × 804.64
  4. Step 4: Simplify right side
    2,856.64x = 3,447,826.08
  5. Step 5: Solve for x
    x = 3,447,826.08/2,856.64
  6. Step 6: Final answer
    x = 1,206.95

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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.