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Finding the Fourth Proportional to 8,348.40, 12,522.60 and 7,714.80

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Solution

The fourth proportional to 8,348.40, 12,522.60 and 7,714.80 is: 11,572.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.40 : 12,522.60 = 7,714.80 : x
  2. Step 2: Convert to fraction form
    8,348.40/12,522.60 = 7,714.80/x
  3. Step 3: Cross multiply
    8,348.40x = 12,522.60 × 7,714.80
  4. Step 4: Simplify right side
    8,348.40x = 96,609,354.48
  5. Step 5: Solve for x
    x = 96,609,354.48/8,348.40
  6. Step 6: Final answer
    x = 11,572.20

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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.