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Finding the Fourth Proportional to 6,490.30, 8,956.74 and 3,837.72

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Solution

The fourth proportional to 6,490.30, 8,956.74 and 3,837.72 is: 5,296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.30 : 8,956.74 = 3,837.72 : x
  2. Step 2: Convert to fraction form
    6,490.30/8,956.74 = 3,837.72/x
  3. Step 3: Cross multiply
    6,490.30x = 8,956.74 × 3,837.72
  4. Step 4: Simplify right side
    6,490.30x = 34,373,460.23
  5. Step 5: Solve for x
    x = 34,373,460.23/6,490.30
  6. Step 6: Final answer
    x = 5,296.13

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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.