Home / 2,790.84-4,179.78-2,328.60

Finding the Fourth Proportional to 2,790.84, 4,179.78 and 2,328.60

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Solution

The fourth proportional to 2,790.84, 4,179.78 and 2,328.60 is: 3,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.84 : 4,179.78 = 2,328.60 : x
  2. Step 2: Convert to fraction form
    2,790.84/4,179.78 = 2,328.60/x
  3. Step 3: Cross multiply
    2,790.84x = 4,179.78 × 2,328.60
  4. Step 4: Simplify right side
    2,790.84x = 9,733,035.71
  5. Step 5: Solve for x
    x = 9,733,035.71/2,790.84
  6. Step 6: Final answer
    x = 3,487.49

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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.