Home / 3,487.40-4,813.31-2,142.39

Finding the Fourth Proportional to 3,487.40, 4,813.31 and 2,142.39

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Solution

The fourth proportional to 3,487.40, 4,813.31 and 2,142.39 is: 2,956.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.40 : 4,813.31 = 2,142.39 : x
  2. Step 2: Convert to fraction form
    3,487.40/4,813.31 = 2,142.39/x
  3. Step 3: Cross multiply
    3,487.40x = 4,813.31 × 2,142.39
  4. Step 4: Simplify right side
    3,487.40x = 10,311,992.57
  5. Step 5: Solve for x
    x = 10,311,992.57/3,487.40
  6. Step 6: Final answer
    x = 2,956.93

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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.