Home / 3,436.81-4,742.28-2,020.39

Finding the Fourth Proportional to 3,436.81, 4,742.28 and 2,020.39

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Solution

The fourth proportional to 3,436.81, 4,742.28 and 2,020.39 is: 2,787.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.81 : 4,742.28 = 2,020.39 : x
  2. Step 2: Convert to fraction form
    3,436.81/4,742.28 = 2,020.39/x
  3. Step 3: Cross multiply
    3,436.81x = 4,742.28 × 2,020.39
  4. Step 4: Simplify right side
    3,436.81x = 9,581,243.23
  5. Step 5: Solve for x
    x = 9,581,243.23/3,436.81
  6. Step 6: Final answer
    x = 2,787.83

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Double scale
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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.