Home / 3,390.63-5,084.55-2,156.33

Finding the Fourth Proportional to 3,390.63, 5,084.55 and 2,156.33

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Solution

The fourth proportional to 3,390.63, 5,084.55 and 2,156.33 is: 3,233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.63 : 5,084.55 = 2,156.33 : x
  2. Step 2: Convert to fraction form
    3,390.63/5,084.55 = 2,156.33/x
  3. Step 3: Cross multiply
    3,390.63x = 5,084.55 × 2,156.33
  4. Step 4: Simplify right side
    3,390.63x = 10,963,980.41
  5. Step 5: Solve for x
    x = 10,963,980.41/3,390.63
  6. Step 6: Final answer
    x = 3,233.62

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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.