Home / 8,108.90-12,163.35-4,643.30

Finding the Fourth Proportional to 8,108.90, 12,163.35 and 4,643.30

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Solution

The fourth proportional to 8,108.90, 12,163.35 and 4,643.30 is: 6,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.90 : 12,163.35 = 4,643.30 : x
  2. Step 2: Convert to fraction form
    8,108.90/12,163.35 = 4,643.30/x
  3. Step 3: Cross multiply
    8,108.90x = 12,163.35 × 4,643.30
  4. Step 4: Simplify right side
    8,108.90x = 56,478,083.06
  5. Step 5: Solve for x
    x = 56,478,083.06/8,108.90
  6. Step 6: Final answer
    x = 6,964.95

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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.