Home / 8,209.92-12,312.63-2,943.95

Finding the Fourth Proportional to 8,209.92, 12,312.63 and 2,943.95

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Solution

The fourth proportional to 8,209.92, 12,312.63 and 2,943.95 is: 4,415.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.92 : 12,312.63 = 2,943.95 : x
  2. Step 2: Convert to fraction form
    8,209.92/12,312.63 = 2,943.95/x
  3. Step 3: Cross multiply
    8,209.92x = 12,312.63 × 2,943.95
  4. Step 4: Simplify right side
    8,209.92x = 36,247,808.91
  5. Step 5: Solve for x
    x = 36,247,808.91/8,209.92
  6. Step 6: Final answer
    x = 4,415.12

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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.