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Finding the Fourth Proportional to 5,216.64, 7,815.85 and 4,344.76

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Solution

The fourth proportional to 5,216.64, 7,815.85 and 4,344.76 is: 6,509.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.64 : 7,815.85 = 4,344.76 : x
  2. Step 2: Convert to fraction form
    5,216.64/7,815.85 = 4,344.76/x
  3. Step 3: Cross multiply
    5,216.64x = 7,815.85 × 4,344.76
  4. Step 4: Simplify right side
    5,216.64x = 33,957,992.45
  5. Step 5: Solve for x
    x = 33,957,992.45/5,216.64
  6. Step 6: Final answer
    x = 6,509.55

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1.5x scale

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.