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Finding the Fourth Proportional to 8,963.95, 12,370.55 and 4,930.95

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Solution

The fourth proportional to 8,963.95, 12,370.55 and 4,930.95 is: 6,804.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.95 : 12,370.55 = 4,930.95 : x
  2. Step 2: Convert to fraction form
    8,963.95/12,370.55 = 4,930.95/x
  3. Step 3: Cross multiply
    8,963.95x = 12,370.55 × 4,930.95
  4. Step 4: Simplify right side
    8,963.95x = 60,998,563.52
  5. Step 5: Solve for x
    x = 60,998,563.52/8,963.95
  6. Step 6: Final answer
    x = 6,804.88

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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.