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Finding the Fourth Proportional to 6,712.87, 9,262.76 and 3,728.72

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Solution

The fourth proportional to 6,712.87, 9,262.76 and 3,728.72 is: 5,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,712.87 : 9,262.76 = 3,728.72 : x
  2. Step 2: Convert to fraction form
    6,712.87/9,262.76 = 3,728.72/x
  3. Step 3: Cross multiply
    6,712.87x = 9,262.76 × 3,728.72
  4. Step 4: Simplify right side
    6,712.87x = 34,538,219.82
  5. Step 5: Solve for x
    x = 34,538,219.82/6,712.87
  6. Step 6: Final answer
    x = 5,145.08

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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.