Home / 5,101.28-7,651.92-1,638.56

Finding the Fourth Proportional to 5,101.28, 7,651.92 and 1,638.56

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Solution

The fourth proportional to 5,101.28, 7,651.92 and 1,638.56 is: 2,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.28 : 7,651.92 = 1,638.56 : x
  2. Step 2: Convert to fraction form
    5,101.28/7,651.92 = 1,638.56/x
  3. Step 3: Cross multiply
    5,101.28x = 7,651.92 × 1,638.56
  4. Step 4: Simplify right side
    5,101.28x = 12,538,130.04
  5. Step 5: Solve for x
    x = 12,538,130.04/5,101.28
  6. Step 6: Final answer
    x = 2,457.84

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1.5x scale

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.