Home / 8,623.95-12,936.20-3,077.21

Finding the Fourth Proportional to 8,623.95, 12,936.20 and 3,077.21

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Solution

The fourth proportional to 8,623.95, 12,936.20 and 3,077.21 is: 4,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.95 : 12,936.20 = 3,077.21 : x
  2. Step 2: Convert to fraction form
    8,623.95/12,936.20 = 3,077.21/x
  3. Step 3: Cross multiply
    8,623.95x = 12,936.20 × 3,077.21
  4. Step 4: Simplify right side
    8,623.95x = 39,807,323.93
  5. Step 5: Solve for x
    x = 39,807,323.93/8,623.95
  6. Step 6: Final answer
    x = 4,615.90

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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.