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Finding the Fourth Proportional to 5,216.98, 7,815.04 and 3,135.86

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Solution

The fourth proportional to 5,216.98, 7,815.04 and 3,135.86 is: 4,697.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.98 : 7,815.04 = 3,135.86 : x
  2. Step 2: Convert to fraction form
    5,216.98/7,815.04 = 3,135.86/x
  3. Step 3: Cross multiply
    5,216.98x = 7,815.04 × 3,135.86
  4. Step 4: Simplify right side
    5,216.98x = 24,506,871.33
  5. Step 5: Solve for x
    x = 24,506,871.33/5,216.98
  6. Step 6: Final answer
    x = 4,697.52

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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.