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Finding the Fourth Proportional to 6,388.13, 8,815 and 4,710.44

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Solution

The fourth proportional to 6,388.13, 8,815 and 4,710.44 is: 6,499.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.13 : 8,815 = 4,710.44 : x
  2. Step 2: Convert to fraction form
    6,388.13/8,815 = 4,710.44/x
  3. Step 3: Cross multiply
    6,388.13x = 8,815 × 4,710.44
  4. Step 4: Simplify right side
    6,388.13x = 41,522,484.53
  5. Step 5: Solve for x
    x = 41,522,484.53/6,388.13
  6. Step 6: Final answer
    x = 6,499.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.