Home / 3,957.90-5,461.38-2,189.52

Finding the Fourth Proportional to 3,957.90, 5,461.38 and 2,189.52

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Solution

The fourth proportional to 3,957.90, 5,461.38 and 2,189.52 is: 3,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.90 : 5,461.38 = 2,189.52 : x
  2. Step 2: Convert to fraction form
    3,957.90/5,461.38 = 2,189.52/x
  3. Step 3: Cross multiply
    3,957.90x = 5,461.38 × 2,189.52
  4. Step 4: Simplify right side
    3,957.90x = 11,957,800.74
  5. Step 5: Solve for x
    x = 11,957,800.74/3,957.90
  6. Step 6: Final answer
    x = 3,021.25

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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.