Home / 10,785.45-16,178.16-3,390.56

Finding the Fourth Proportional to 10,785.45, 16,178.16 and 3,390.56

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Solution

The fourth proportional to 10,785.45, 16,178.16 and 3,390.56 is: 5,085.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.45 : 16,178.16 = 3,390.56 : x
  2. Step 2: Convert to fraction form
    10,785.45/16,178.16 = 3,390.56/x
  3. Step 3: Cross multiply
    10,785.45x = 16,178.16 × 3,390.56
  4. Step 4: Simplify right side
    10,785.45x = 54,852,953.99
  5. Step 5: Solve for x
    x = 54,852,953.99/10,785.45
  6. Step 6: Final answer
    x = 5,085.83

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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.