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Finding the Fourth Proportional to 6,385.40, 8,813.40 and 4,261.04

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Solution

The fourth proportional to 6,385.40, 8,813.40 and 4,261.04 is: 5,881.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.40 : 8,813.40 = 4,261.04 : x
  2. Step 2: Convert to fraction form
    6,385.40/8,813.40 = 4,261.04/x
  3. Step 3: Cross multiply
    6,385.40x = 8,813.40 × 4,261.04
  4. Step 4: Simplify right side
    6,385.40x = 37,554,249.94
  5. Step 5: Solve for x
    x = 37,554,249.94/6,385.40
  6. Step 6: Final answer
    x = 5,881.27

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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.