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Finding the Fourth Proportional to 6,415.80, 8,848.40 and 4,175.94

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Solution

The fourth proportional to 6,415.80, 8,848.40 and 4,175.94 is: 5,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.80 : 8,848.40 = 4,175.94 : x
  2. Step 2: Convert to fraction form
    6,415.80/8,848.40 = 4,175.94/x
  3. Step 3: Cross multiply
    6,415.80x = 8,848.40 × 4,175.94
  4. Step 4: Simplify right side
    6,415.80x = 36,950,387.50
  5. Step 5: Solve for x
    x = 36,950,387.50/6,415.80
  6. Step 6: Final answer
    x = 5,759.28

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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.