Home / 3,866.45-5,336.04-2,188.40

Finding the Fourth Proportional to 3,866.45, 5,336.04 and 2,188.40

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Solution

The fourth proportional to 3,866.45, 5,336.04 and 2,188.40 is: 3,020.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.45 : 5,336.04 = 2,188.40 : x
  2. Step 2: Convert to fraction form
    3,866.45/5,336.04 = 2,188.40/x
  3. Step 3: Cross multiply
    3,866.45x = 5,336.04 × 2,188.40
  4. Step 4: Simplify right side
    3,866.45x = 11,677,376.60
  5. Step 5: Solve for x
    x = 11,677,376.60/3,866.45
  6. Step 6: Final answer
    x = 3,020.18

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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.