Home / 8,919.92-12,309.49-4,941.29

Finding the Fourth Proportional to 8,919.92, 12,309.49 and 4,941.29

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Solution

The fourth proportional to 8,919.92, 12,309.49 and 4,941.29 is: 6,818.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.92 : 12,309.49 = 4,941.29 : x
  2. Step 2: Convert to fraction form
    8,919.92/12,309.49 = 4,941.29/x
  3. Step 3: Cross multiply
    8,919.92x = 12,309.49 × 4,941.29
  4. Step 4: Simplify right side
    8,919.92x = 60,824,759.84
  5. Step 5: Solve for x
    x = 60,824,759.84/8,919.92
  6. Step 6: Final answer
    x = 6,818.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.