Home / 3,390.21-4,678.74-2,063.61

Finding the Fourth Proportional to 3,390.21, 4,678.74 and 2,063.61

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Solution

The fourth proportional to 3,390.21, 4,678.74 and 2,063.61 is: 2,847.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.21 : 4,678.74 = 2,063.61 : x
  2. Step 2: Convert to fraction form
    3,390.21/4,678.74 = 2,063.61/x
  3. Step 3: Cross multiply
    3,390.21x = 4,678.74 × 2,063.61
  4. Step 4: Simplify right side
    3,390.21x = 9,655,094.65
  5. Step 5: Solve for x
    x = 9,655,094.65/3,390.21
  6. Step 6: Final answer
    x = 2,847.93

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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.