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Finding the Fourth Proportional to 8,985.87, 13,480.80 and 2,745.93

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Solution

The fourth proportional to 8,985.87, 13,480.80 and 2,745.93 is: 4,119.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.87 : 13,480.80 = 2,745.93 : x
  2. Step 2: Convert to fraction form
    8,985.87/13,480.80 = 2,745.93/x
  3. Step 3: Cross multiply
    8,985.87x = 13,480.80 × 2,745.93
  4. Step 4: Simplify right side
    8,985.87x = 37,017,373.40
  5. Step 5: Solve for x
    x = 37,017,373.40/8,985.87
  6. Step 6: Final answer
    x = 4,119.51

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1.5x scale

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.