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Finding the Fourth Proportional to 8,703.87, 13,055.80 and 3,155.95

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Solution

The fourth proportional to 8,703.87, 13,055.80 and 3,155.95 is: 4,733.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.87 : 13,055.80 = 3,155.95 : x
  2. Step 2: Convert to fraction form
    8,703.87/13,055.80 = 3,155.95/x
  3. Step 3: Cross multiply
    8,703.87x = 13,055.80 × 3,155.95
  4. Step 4: Simplify right side
    8,703.87x = 41,203,452.01
  5. Step 5: Solve for x
    x = 41,203,452.01/8,703.87
  6. Step 6: Final answer
    x = 4,733.92

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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.