Home / 7,139.11-10,709.83-2,457.99

Finding the Fourth Proportional to 7,139.11, 10,709.83 and 2,457.99

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Solution

The fourth proportional to 7,139.11, 10,709.83 and 2,457.99 is: 3,687.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.11 : 10,709.83 = 2,457.99 : x
  2. Step 2: Convert to fraction form
    7,139.11/10,709.83 = 2,457.99/x
  3. Step 3: Cross multiply
    7,139.11x = 10,709.83 × 2,457.99
  4. Step 4: Simplify right side
    7,139.11x = 26,324,601.49
  5. Step 5: Solve for x
    x = 26,324,601.49/7,139.11
  6. Step 6: Final answer
    x = 3,687.38

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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.