Home / 5,628.79-8,443.19-2,119.57

Finding the Fourth Proportional to 5,628.79, 8,443.19 and 2,119.57

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Solution

The fourth proportional to 5,628.79, 8,443.19 and 2,119.57 is: 3,179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.79 : 8,443.19 = 2,119.57 : x
  2. Step 2: Convert to fraction form
    5,628.79/8,443.19 = 2,119.57/x
  3. Step 3: Cross multiply
    5,628.79x = 8,443.19 × 2,119.57
  4. Step 4: Simplify right side
    5,628.79x = 17,895,904.50
  5. Step 5: Solve for x
    x = 17,895,904.50/5,628.79
  6. Step 6: Final answer
    x = 3,179.35

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Double scale
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Similar ratio
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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.