Home / 4,258.80-6,390.60-1,661.40

Finding the Fourth Proportional to 4,258.80, 6,390.60 and 1,661.40

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Solution

The fourth proportional to 4,258.80, 6,390.60 and 1,661.40 is: 2,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,258.80 : 6,390.60 = 1,661.40 : x
  2. Step 2: Convert to fraction form
    4,258.80/6,390.60 = 1,661.40/x
  3. Step 3: Cross multiply
    4,258.80x = 6,390.60 × 1,661.40
  4. Step 4: Simplify right side
    4,258.80x = 10,617,342.84
  5. Step 5: Solve for x
    x = 10,617,342.84/4,258.80
  6. Step 6: Final answer
    x = 2,493.04

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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.