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Finding the Fourth Proportional to 6,279.82, 8,660.19 and 4,785.10

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Solution

The fourth proportional to 6,279.82, 8,660.19 and 4,785.10 is: 6,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.82 : 8,660.19 = 4,785.10 : x
  2. Step 2: Convert to fraction form
    6,279.82/8,660.19 = 4,785.10/x
  3. Step 3: Cross multiply
    6,279.82x = 8,660.19 × 4,785.10
  4. Step 4: Simplify right side
    6,279.82x = 41,439,875.17
  5. Step 5: Solve for x
    x = 41,439,875.17/6,279.82
  6. Step 6: Final answer
    x = 6,598.90

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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.