Home / 5,640.21-7,783.59-3,516.60

Finding the Fourth Proportional to 5,640.21, 7,783.59 and 3,516.60

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Solution

The fourth proportional to 5,640.21, 7,783.59 and 3,516.60 is: 4,852.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.21 : 7,783.59 = 3,516.60 : x
  2. Step 2: Convert to fraction form
    5,640.21/7,783.59 = 3,516.60/x
  3. Step 3: Cross multiply
    5,640.21x = 7,783.59 × 3,516.60
  4. Step 4: Simplify right side
    5,640.21x = 27,371,772.59
  5. Step 5: Solve for x
    x = 27,371,772.59/5,640.21
  6. Step 6: Final answer
    x = 4,852.97

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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.