Home / 3,219.84-4,828.87-1,139.57

Finding the Fourth Proportional to 3,219.84, 4,828.87 and 1,139.57

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Solution

The fourth proportional to 3,219.84, 4,828.87 and 1,139.57 is: 1,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.84 : 4,828.87 = 1,139.57 : x
  2. Step 2: Convert to fraction form
    3,219.84/4,828.87 = 1,139.57/x
  3. Step 3: Cross multiply
    3,219.84x = 4,828.87 × 1,139.57
  4. Step 4: Simplify right side
    3,219.84x = 5,502,842.75
  5. Step 5: Solve for x
    x = 5,502,842.75/3,219.84
  6. Step 6: Final answer
    x = 1,709.04

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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.