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Finding the Fourth Proportional to 4,640.84, 6,400.62 and 4,080.11

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Solution

The fourth proportional to 4,640.84, 6,400.62 and 4,080.11 is: 5,627.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.84 : 6,400.62 = 4,080.11 : x
  2. Step 2: Convert to fraction form
    4,640.84/6,400.62 = 4,080.11/x
  3. Step 3: Cross multiply
    4,640.84x = 6,400.62 × 4,080.11
  4. Step 4: Simplify right side
    4,640.84x = 26,115,201.67
  5. Step 5: Solve for x
    x = 26,115,201.67/4,640.84
  6. Step 6: Final answer
    x = 5,627.26

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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.