Home / 3,957.28-5,461.10-2,188.87

Finding the Fourth Proportional to 3,957.28, 5,461.10 and 2,188.87

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Solution

The fourth proportional to 3,957.28, 5,461.10 and 2,188.87 is: 3,020.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.28 : 5,461.10 = 2,188.87 : x
  2. Step 2: Convert to fraction form
    3,957.28/5,461.10 = 2,188.87/x
  3. Step 3: Cross multiply
    3,957.28x = 5,461.10 × 2,188.87
  4. Step 4: Simplify right side
    3,957.28x = 11,953,637.96
  5. Step 5: Solve for x
    x = 11,953,637.96/3,957.28
  6. Step 6: Final answer
    x = 3,020.67

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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.