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Finding the Fourth Proportional to 6,612.60, 9,915.98 and 3,099.77

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Solution

The fourth proportional to 6,612.60, 9,915.98 and 3,099.77 is: 4,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.60 : 9,915.98 = 3,099.77 : x
  2. Step 2: Convert to fraction form
    6,612.60/9,915.98 = 3,099.77/x
  3. Step 3: Cross multiply
    6,612.60x = 9,915.98 × 3,099.77
  4. Step 4: Simplify right side
    6,612.60x = 30,737,285.21
  5. Step 5: Solve for x
    x = 30,737,285.21/6,612.60
  6. Step 6: Final answer
    x = 4,648.29

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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.