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Finding the Fourth Proportional to 8,625.44, 12,925.80 and 4,920

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Solution

The fourth proportional to 8,625.44, 12,925.80 and 4,920 is: 7,372.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.44 : 12,925.80 = 4,920 : x
  2. Step 2: Convert to fraction form
    8,625.44/12,925.80 = 4,920/x
  3. Step 3: Cross multiply
    8,625.44x = 12,925.80 × 4,920
  4. Step 4: Simplify right side
    8,625.44x = 63,594,936
  5. Step 5: Solve for x
    x = 63,594,936/8,625.44
  6. Step 6: Final answer
    x = 7,372.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.