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Finding the Fourth Proportional to 8,490.60, 12,710.30 and 7,466.60

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Solution

The fourth proportional to 8,490.60, 12,710.30 and 7,466.60 is: 11,177.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.60 : 12,710.30 = 7,466.60 : x
  2. Step 2: Convert to fraction form
    8,490.60/12,710.30 = 7,466.60/x
  3. Step 3: Cross multiply
    8,490.60x = 12,710.30 × 7,466.60
  4. Step 4: Simplify right side
    8,490.60x = 94,902,725.98
  5. Step 5: Solve for x
    x = 94,902,725.98/8,490.60
  6. Step 6: Final answer
    x = 11,177.39

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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.