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Finding the Fourth Proportional to 8,640.50, 11,924.94 and 4,865.08

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Solution

The fourth proportional to 8,640.50, 11,924.94 and 4,865.08 is: 6,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.50 : 11,924.94 = 4,865.08 : x
  2. Step 2: Convert to fraction form
    8,640.50/11,924.94 = 4,865.08/x
  3. Step 3: Cross multiply
    8,640.50x = 11,924.94 × 4,865.08
  4. Step 4: Simplify right side
    8,640.50x = 58,015,787.10
  5. Step 5: Solve for x
    x = 58,015,787.10/8,640.50
  6. Step 6: Final answer
    x = 6,714.40

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1.5x scale

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.