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Finding the Fourth Proportional to 8,479.00, 12,714.40 and 2,930.40

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Solution

The fourth proportional to 8,479.00, 12,714.40 and 2,930.40 is: 4,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.00 : 12,714.40 = 2,930.40 : x
  2. Step 2: Convert to fraction form
    8,479.00/12,714.40 = 2,930.40/x
  3. Step 3: Cross multiply
    8,479.00x = 12,714.40 × 2,930.40
  4. Step 4: Simplify right side
    8,479.00x = 37,258,199.54
  5. Step 5: Solve for x
    x = 37,258,199.54/8,479.00
  6. Step 6: Final answer
    x = 4,394.18

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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.