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Finding the Fourth Proportional to 8,692.45, 13,040.06 and 3,145.23

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Solution

The fourth proportional to 8,692.45, 13,040.06 and 3,145.23 is: 4,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.45 : 13,040.06 = 3,145.23 : x
  2. Step 2: Convert to fraction form
    8,692.45/13,040.06 = 3,145.23/x
  3. Step 3: Cross multiply
    8,692.45x = 13,040.06 × 3,145.23
  4. Step 4: Simplify right side
    8,692.45x = 41,013,987.91
  5. Step 5: Solve for x
    x = 41,013,987.91/8,692.45
  6. Step 6: Final answer
    x = 4,718.35

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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.