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Finding the Fourth Proportional to 6,435.23, 8,880.71 and 3,917.44

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Solution

The fourth proportional to 6,435.23, 8,880.71 and 3,917.44 is: 5,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,435.23 : 8,880.71 = 3,917.44 : x
  2. Step 2: Convert to fraction form
    6,435.23/8,880.71 = 3,917.44/x
  3. Step 3: Cross multiply
    6,435.23x = 8,880.71 × 3,917.44
  4. Step 4: Simplify right side
    6,435.23x = 34,789,640.10
  5. Step 5: Solve for x
    x = 34,789,640.10/6,435.23
  6. Step 6: Final answer
    x = 5,406.13

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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.