Home / 8,838.77-12,199.47-6,920.78

Finding the Fourth Proportional to 8,838.77, 12,199.47 and 6,920.78

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Solution

The fourth proportional to 8,838.77, 12,199.47 and 6,920.78 is: 9,552.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838.77 : 12,199.47 = 6,920.78 : x
  2. Step 2: Convert to fraction form
    8,838.77/12,199.47 = 6,920.78/x
  3. Step 3: Cross multiply
    8,838.77x = 12,199.47 × 6,920.78
  4. Step 4: Simplify right side
    8,838.77x = 84,429,847.99
  5. Step 5: Solve for x
    x = 84,429,847.99/8,838.77
  6. Step 6: Final answer
    x = 9,552.22

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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.